1/2 x e^(-i X) log(X^2+1)+1/2 x e^(i X) log(X^2+1)+constant ,integral_0^pi cos(X) log(1+X^2) dX~-1.68298423297027...
∫cosX*ln(1+X^2)dx怎么求?
1/2 x e^(-i X) log(X^2+1)+1/2 x e^(i X) log(X^2+1)+constant ,integral_0^pi cos(X) log(1+X^2) dX~-1.68298423297027...