Question

Lim (1-sin3x)/(x-pi/2)^2 when x-> pi/2

Answer 1

\[\sin (\frac{\pi}{2} -x)=\cos(x)\]

Answer 2

or \[\cos(\frac{\pi}{2} -x) = \sin x\]

Answer 3

The answer is 9/2 tho

Answer 4

No, it approaches infinity.

The numerator is approaching 1-(-1),
and the denominator is approaching 0.