# Math Help - ugh, optimazation...

1. ## ugh, optimazation...

i just have issues with the algebra, i can take the derivative, but then im stuck. thanks for any help in advance!

An electric current, , in amps, is given by
where is a constant. What are the maximum and minimum values of I?

2. Originally Posted by purplegirl1818
i just have issues with the algebra, i can take the derivative, but then im stuck. thanks for any help in advance!

An electric current, , in amps, is given by

where is a constant. What are the maximum and minimum values of I?
Solve dI/dt = 0.

Show all the work you've done and where you get stuck.

By the way, there's also a non-calculus way of doing this that involves re-writing the expression for current as $I = A \cos (\omega t + \phi)$.