jee-main 2024 Q71

jee-main · India · session2_09apr_shift2 Indefinite & Definite Integrals Definite Integral Evaluation (Computational)
The integral $\int _ { 1 / 4 } ^ { 3 / 4 } \cos \left( 2 \cot ^ { - 1 } \sqrt { \frac { 1 - x } { 1 + x } } \right) d x$ is equal to
(1) $1 / 2$
(2) $- 1 / 2$
(3) $- 1 / 4$
(4) $1 / 4$
The integral $\int _ { 1 / 4 } ^ { 3 / 4 } \cos \left( 2 \cot ^ { - 1 } \sqrt { \frac { 1 - x } { 1 + x } } \right) d x$ is equal to\\
(1) $1 / 2$\\
(2) $- 1 / 2$\\
(3) $- 1 / 4$\\
(4) $1 / 4$