• October 23rd 2012, 07:25 PM
psilver1
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
• October 23rd 2012, 08:06 PM
chiro
Hey psilver1.

Can you show the full problem in its full detail please?
• October 23rd 2012, 08:11 PM
psilver1
The derivative of $\sin{t}$ is $\cos{t}$ which is positive for $0 and $\frac{3\pi}{2} and negative for $\frac{\pi}{2}.