LG Ex15-6A Q7a

 

LG Ex15-6B Q11b

 

Integral involving inverse trig fns - $\displaystyle \int \dfrac{x^2}{x^2+4x+20} dx$.

 

Integration example involving $I_n=\displaystyle \int^1_0\dfrac{x^n}{1+x^2} dx $ (LG Ex 15-6A Q8ab)