Integral Calculus Question 62

Question: $ \int_{{}}^{{}}{\frac{dx}{x^{2}+2x+2}=} $

[Karnataka CET 2004]

Options:

A) $ {{\sin }^{-1}}(x+1)+c $

B) $ {{\sinh }^{-1}}(x+1)+c $

C) $ {{\tanh }^{-1}}(x+1)+c $

D) $ {{\tan }^{-1}}(x+1)+c $

Show Answer

Answer:

Correct Answer: D

Solution:

$ \int_{{}}^{{}}{\frac{dx}{x^{2}+2x+2}=\int_{{}}^{{}}{\frac{dx}{{{(x+1)}^{2}}+1}={{\tan }^{-1}}(x+1)+c}} $ .