Question

Evaluate $\int \frac{x}{x^2+3}dx$

Answer 1

$\int \frac{x}{x^2+3}dx{x}^2+3=t⟹2xdx=dt\int \frac{1}{2}\frac{dt}{t}\frac{1}{2}\log t\frac{1}{2}\log (x^2+3)+c$