Question

What is the first value of of t greater than zero for which the derivative is greater than zero?

Answer 1

\[\huge f'(x)\frac{ sintcost }{ 25 \pi }\]

Answer 2

f'(x)= **

Answer 3

Uh... there's no "first" value.

Answer 4

that's what my question states :S

Answer 5

Are they asking to solve for t, equation the derivative to zero?

Answer 6

At t=0, the derivative will be 0. For 0<t<\(\frac{\Large\pi}{2}\) the derivative will be positive because sin and cos will both be positive.

Answer 7

\[T = 0 + \left| \delta t \right|\]