关于MATLAB解参数方程的问题

关于MATLAB解参数方程的问题
表达式如下
[z]=solve('a+1320*cos(x+y)+1320*cos(x-z)+a*cos(y+z)=2*1320*cos(x)+2a*cos(x)*cos(x)','z'),想从等式中解出z的表达式,但在MATLAB中运行显示错误,提示输入无效,请问是怎么回事?

你少写了一个乘号,这样就行了：
z]=solve('a+1320*cos(x+y)+1320*cos(x-z)+a*cos(y+z)=2*1320*cos(x)+2*a*cos(x)*cos(x)','z')

z =

atan((-a+1320*cos(x)*cos(y)-1320*sin(x)*sin(y)+660*cos(x)/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)+2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2))+1/2*a*cos(y)/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)+2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2))-2640*cos(x)+2*a*sin(x)^2)/(-1320*sin(x)+a*sin(y)),1/2/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)+2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2)))
atan((-a+1320*cos(x)*cos(y)-1320*sin(x)*sin(y)+660*cos(x)/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)-2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2))+1/2*a*cos(y)/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)-2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2))-2640*cos(x)+2*a*sin(x)^2)/(-1320*sin(x)+a*sin(y)),1/2/(a^2+1742400-2640*a*sin(x)*sin(y)+2640*a*cos(x)*cos(y))*(6969600-3484800*cos(y)+2*a^2*cos(y)+3484800*sin(x)^2*cos(y)+5280*a*cos(x)*cos(y)-5280*cos(x)*a*sin(x)^2+3484800*sin(x)*sin(y)*cos(x)-4*a^2*cos(y)*sin(x)^2-6969600*sin(x)^2+2640*sin(y)^2*a*cos(x)+2640*sin(x)*sin(y)*a*cos(y)-2*(9199872000*a*cos(x)*cos(y)^2+18399744000*cos(x)*a*sin(x)^4+13939200*a^2*cos(x)^2*cos(y)^2-12143831040000*sin(x)^3*sin(y)*cos(x)+6969600*cos(x)^2*a^2*sin(x)^4+5280*a^3*cos(y)^2*cos(x)-10454400*a^2+6969600*a^2*cos(y)^2*cos(x)*sin(x)*sin(y)+13939200*cos(y)*a^2*sin(x)^4-6071915520000*sin(x)^2*cos(y)^2-6969600*a^2*sin(x)^4-9199872000*a*cos(x)+17424000*a^2*sin(x)^2+12143831040000*sin(x)^4+10560*cos(x)*a^3*sin(x)^2-9199872000*sin(x)*sin(y)*a*cos(y)+9199872000*cos(x)*cos(y)*a*sin(x)^2+13939200*a^2*cos(y)+12143831040000*sin(x)^2*cos(y)-6071915520000*sin(x)^2*sin(y)^2+3484800*a^2*sin(y)^2+13799808000*a*sin(x)*sin(y)-27878400*a^2*cos(y)*sin(x)^2+9199872000*sin(y)^2*a*cos(x)-18399744000*sin(x)^3*sin(y)*a+3035957760000*sin(y)^2+3035957760000*cos(y)^2-13939200*a^2*cos(x)^2*cos(y)+3035957760000*sin(x)^2*sin(y)^2*cos(x)^2-6969600*a^2*cos(y)^2*sin(x)^4+10454400*sin(x)^2*a^2*sin(y)^2-3035957760000-9199872000*cos(x)*cos(y)^2*a*sin(x)^2+9199872000*cos(y)*sin(x)^3*sin(y)*a-10560*a^3*cos(y)^2*cos(x)*sin(x)^2-9199872000*sin(x)^4*cos(y)*cos(x)*a+6071915520000*sin(x)^3*cos(y)*sin(y)*cos(x)+13939200*a^2*cos(x)^2*cos(y)*sin(x)^2-13939200*a^2*cos(x)^2*cos(y)^2*sin(x)^2+5280*a^3*cos(x)*cos(y)*sin(y)^2-27878400*cos(x)*a^2*sin(x)^3*sin(y)-9199872000*cos(x)^2*a*sin(x)^3*sin(y)+9199872000*cos(x)*a*sin(x)^2*sin(y)^2+6969600*sin(x)*sin(y)*cos(x)*a^2-3484800*a^2*cos(y)^2+3035957760000*sin(x)^4*cos(y)^2+9199872000*a*cos(x)^2*cos(y)^2*sin(x)*sin(y)-9199872000*a*cos(x)*cos(y)*sin(x)^2*sin(y)^2-9199872000*a*cos(x)^2*cos(y)*sin(x)*sin(y)+13939200*a^2*cos(x)*cos(y)*sin(x)^3*sin(y)-6969600*sin(y)^2*a^2*cos(x)^2*sin(x)^2+6969600*sin(y)^2*a^2*cos(x)^2*cos(y)+4599936000*sin(y)^3*a*cos(x)^2*sin(x)-4599936000*sin(x)*sin(y)*a*cos(y)^2+4599936000*sin(x)^3*sin(y)*a*cos(y)^2-a^4+2640*a^3*cos(y)^2*sin(x)*sin(y)-5280*a^3*cos(y)^2*sin(x)^3*sin(y)+1742400*sin(x)^2*sin(y)^2*a^2*cos(y)^2-5280*a^3*sin(x)^3*sin(y)+9199872000*a*sin(x)^3*sin(y)^3-4*a^4*cos(y)^2*sin(x)^2+4*a^4*cos(y)^2*sin(x)^4+1742400*sin(y)^4*a^2*cos(x)^2-2640*a^3*sin(x)*sin(y)^3+10560*a^3*sin(x)^5*sin(y)-4599936000*a*sin(x)*sin(y)^3-13939200*a^2*sin(x)^4*sin(y)^2-2640*a^3*sin(x)*sin(y)+a^4*cos(y)^2+a^4*sin(y)^2-4*a^4*sin(x)^4-5280*a^3*cos(x)+4*a^4*sin(x)^2-5280*a^3*cos(y)*sin(x)^2*sin(y)^2*cos(x)+3484800*sin(y)^3*a^2*cos(x)*sin(x)*cos(y)-13939200*a^2*cos(y)*sin(x)*sin(y)*cos(x)-12143831040000*sin(x)^4*cos(y)+10454400*a^2*cos(y)^2*sin(x)^2-6071915520000*sin(x)^2)^(1/2)))