Evaluate the limit _ x 0 1- x- x^ 2 2 x^ 4 .

MATHEMATICS · Subjective · AP · Calculus AB · Limits and Continuity · Limits and Continuity

Problem

Evaluate the limit

\lim_{x\to 0}\frac{1-\cos x-\dfrac{x^{2}}{2}}{x^{4}}.