Don't know the steps in finding this derivative.
But the derivative is
Now simplify:
The answer is:
atan(x + 2) /log(sinh(3*x)) 3*atan(x + 2)*cosh(3*x)\ sinh (3*x)*|-------------- + -----------------------| | 2 sinh(3*x) | \ 1 + (x + 2) /
/ 2 2 \ atan(2 + x) |/log(sinh(3*x)) 3*atan(2 + x)*cosh(3*x)\ 9*cosh (3*x)*atan(2 + x) 2*(2 + x)*log(sinh(3*x)) 6*cosh(3*x) | sinh (3*x)*||-------------- + -----------------------| + 9*atan(2 + x) - ------------------------ - ------------------------ + ------------------------| || 2 sinh(3*x) | 2 2 / 2\ | |\ 1 + (2 + x) / sinh (3*x) / 2\ \1 + (2 + x) /*sinh(3*x)| \ \1 + (2 + x) / /
/ 3 / 2 \ 2 2 3 \ atan(2 + x) |/log(sinh(3*x)) 3*atan(2 + x)*cosh(3*x)\ 27 /log(sinh(3*x)) 3*atan(2 + x)*cosh(3*x)\ | 6*cosh(3*x) 2*(2 + x)*log(sinh(3*x)) 9*cosh (3*x)*atan(2 + x)| 2*log(sinh(3*x)) 54*atan(2 + x)*cosh(3*x) 27*cosh (3*x) 8*(2 + x) *log(sinh(3*x)) 54*cosh (3*x)*atan(2 + x) 18*(2 + x)*cosh(3*x) | sinh (3*x)*||-------------- + -----------------------| + ------------ - 3*|-------------- + -----------------------|*|-9*atan(2 + x) - ------------------------ + ------------------------ + ------------------------| - ---------------- - ------------------------ - ------------------------- + ------------------------- + ------------------------- - -------------------------| || 2 sinh(3*x) | 2 | 2 sinh(3*x) | | / 2\ 2 2 | 2 sinh(3*x) / 2\ 2 3 3 2 | |\ 1 + (2 + x) / 1 + (2 + x) \ 1 + (2 + x) / | \1 + (2 + x) /*sinh(3*x) / 2\ sinh (3*x) | / 2\ \1 + (2 + x) /*sinh (3*x) / 2\ sinh (3*x) / 2\ | \ \ \1 + (2 + x) / / \1 + (2 + x) / \1 + (2 + x) / \1 + (2 + x) / *sinh(3*x)/