1.

For `0le|x|lesqrt(2)`, if `cos^(-1)(x^(2)-(x^(4))/(2)+(x^(6))/(4)-…)+sin^(-1)(x-(x^(2))/(2)+(x^(3))/(4))-…)=(pi)/(2)`, then x=A. `(-1)/(2)`B. `(1)/(2)`C. `-1`D. `1`

Answer» Correct Answer - D


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