Evaluate limx→0sinhx−xx3\lim_{x \to 0} \frac{\sinh x - x}{x^3}limx→0x3sinhx−x where sinhx=ex−e−x2\sinh x = \frac{e^x - e^{-x}}{2}sinhx=2ex−e−x.
16\frac{1}{6}61
12\frac{1}{2}21
000
111