Evaluate the limit limx→0cos(x)−e−x2/2x4\lim_{x \to 0} \frac{\cos(x) - e^{-x^2/2}}{x^4}limx→0x4cos(x)−e−x2/2.
−1/12-1/12−1/12
1/121/121/12
1/61/61/6
−1/6-1/6−1/6