So I thought I understood how to do these problems until I got to this one. Could someone explain it to me please.

11) Find the points and state whether it is increasing or decreasing. sint 0 less than or equal to t less than or equal to 2pi

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- Oct 23rd 2012, 07:25 PMpsilver1Monotonicit problem Help please
So I thought I understood how to do these problems until I got to this one. Could someone explain it to me please.

11) Find the points and state whether it is increasing or decreasing. sint 0 less than or equal to t less than or equal to 2pi - Oct 23rd 2012, 08:06 PMchiroRe: Monotonicit problem Help please
Hey psilver1.

Can you show the full problem in its full detail please? - Oct 23rd 2012, 08:11 PMpsilver1Re: Monotonicit problem Help please
Use the Monotonicity Thm to find where the given function is increasing or decreasing

H(t)= sint, 0(<or=) t(<or=)2pi - Oct 24th 2012, 08:24 AMhollywoodRe: Monotonicit problem Help please
I've never heard of the monotonicity theorem before, but I probably know it by another name (or perhaps by no name at all).

The derivative of $\displaystyle \sin{t}$ is $\displaystyle \cos{t}$ which is positive for $\displaystyle 0<t<\frac{\pi}{2}$ and $\displaystyle \frac{3\pi}{2}<t<2\pi$ and negative for $\displaystyle \frac{\pi}{2}<t<\frac{3\pi}{2}$.

- Hollywood