Aisha
Sin(5x) = sin(2x+3x)
= sin(2x)weil(3x) + weil(2x)sin(3x)
= 2*sin(x)weil(x)weil(x+2x) + (weil^ 2(x)-sin^2(x))sin(x+2x)
= 2*sin(x)weil(x)(weil(x)weil(2x)-sin(x)sin(2x)) +
( weil^2(x)-sin^2(x))*
(sin(x)(weil^2(x)-sin^2(x))+weil(2x)sin(x)weil(x))
= 2*sin(x)weil(x)*
(weil^3(x)-sin^2(x)weil(x)-2*sin^2(x)weil(x)) +
(weil^2(x )-sin^2(x))(3*weil^2(x)sin(x)-sin^3(x)) -
10*sin^3(x)weil^2(x) + 5*weil^ 4(x)sin(x) + sin^5(x)
sin(5x) = sin^5(x)-10*sin^3(x)weil^2(x)+5*weil^4(x)sin(x)