please-prove-that-lim-x-0-x-sinx-x-3-1-6-by-using-x-3y-and-sin3y-3siny-4sin-3-y-

Question Number 71362 by malwaan last updated on 14/Oct/19

please p r o v e t h a t

\underset{x \to 0}{l i m} \frac{x - s i n x}{x^{3}} = \frac{1}{6} b y u s i n g

x = 3 y a n d

s i n 3 y = 3 s i n y - 4 {s i n}^{3} y