1 votes 1 votes For $x \in[0, \pi / 2], \alpha$ for which $\sin (x) \geq x-\alpha x^{3}$ is $\alpha>1 /(2 \pi)$ $\alpha \geq 1 / 6$ $\alpha \leq 1 /(2 \pi)$ $\alpha=1 / 4$ None of the above Calculus tifr2010 calculus maxima-minima + – admin asked Nov 30, 2022 • recategorized Jan 18, 2023 by Lakshman Bhaiya admin 46.4k points 95 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.