7 x *sin(x) + acot(x)
x^7*sin(x) + acot(x)
1 7 6 - ------ + x *cos(x) + 7*x *sin(x) 2 1 + x
/ 2 6 5 4 \ x*|--------- - x *sin(x) + 14*x *cos(x) + 42*x *sin(x)| | 2 | |/ 2\ | \\1 + x / /
2 2 7 6 8*x 5 4 --------- - x *cos(x) - 21*x *sin(x) - --------- + 126*x *cos(x) + 210*x *sin(x) 2 3 / 2\ / 2\ \1 + x / \1 + x /