Please provide clear steps:

Using logarithmic differentiation, determine dy / dx (assume x > 1): x 2 1 y = 1 x2 +1 Compute the derivative of: a) f(x) = e2x cos 3x b) g(x) = In x- +1 x3 +1 Evaluate: a) e5x dx b) x2 + 4x x3 + 6x2 +5 dx