Finding indefinite integral ∫ DX / (1 + 3 √ x) √ x

Finding indefinite integral ∫ DX / (1 + 3 √ x) √ x


Is it ∫ DX / ((1 + 3 √ x) * √ x)?
Use t = √ x, then x = T ^ 2, DX = 2T
∫(2t/((1+3t)*t))dt=∫(2/(1+3t))dt=(2ln(1+3t))/3+C=(2ln(1+3√x))/3+C
Encounter this kind of compound function, you can consider using the method of substitution, as for the first or the second class depends on your own judgment