(a) Find \int {x+2}/{\sqrt{x^2-4 x-5}} {\d} x. OR (b) Evaluate \int_{- {\a}}^{ {\a}} {\f}(x) {\d} x, where {\f}(x)=\frac{9^x}{1+9^x}.

CBSE Class 12 Math 2023 Outside Delhi Set 3 Solved Paper

Question : 10 of 12

Marks: +1, -0

(a) Find

∫ \;{x+2}/{{√{x^2-4 x-5}}} {\d} x

.
OR
(b) Evaluate

∫↙{- {\a}}↖{ {\a}} {\f}(x) {\d} x

, where

{\f}(x)=\;{9^x}/{1+9^x}

Solution:

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