Question

what is integration of 1/2cos2x

Answer 1

Answer:

since the derivative of a sum is the sum of the derivatives, the integral of a sum is the sum of the integrals: ∫f(x)+g(x)dx=∫f(x)dx+∫g(x)dx. And, likewise, constants 'go through' the integral sign: ∫c⋅f(x)dx=c⋅∫f(x)dx.