MathematicsMedium63×since 2002Q3677If f(x) = sin⁻¹ (2×3x1+9x),\left( {{{2 \times {3^x}} \over {1 + {9^x}}}} \right),(1+9x2×3x), then f'(−12)\left( { - {1 \over 2}} \right)(−21) equals :A−3loge3- \sqrt 3 {\log _e}\sqrt 3−3loge3B3loge3\sqrt 3 {\log _e}\sqrt 33loge3C−3loge 3- \sqrt 3 {\log _e}\, 3−3loge3D3loge 3\sqrt 3 {\log _e}\, 33loge3Check answerSkip