If f(x) = sin x, evaluate lim f(2+h) - f(2) / h h->0 Evaluate to 2 decimal places
问题描述:
If f(x) = sin x, evaluate lim f(2+h) - f(2) / h h->0 Evaluate to 2 decimal places
答
lim(h→0) [f(2 + h) - f(2)]/h
= lim(h→0) f'(2 + h)
= f'(2)
= (sinx)' |_(x = 2)
= cosx |_(x = 2)
= cos(2)
= - 0.42 ,in radians