Recent content by Jonathan_Kyle

Thank you for the reply, I am obviously doing something wrong between; cos5x=0 and 5x= π/2 or 3π/2 ( i understand where you get 3π/2, just another revolution from π/2) what i don't understand is how you got π/2, I was under the impression that you take the inverse of cosine from each side of...

Homework Statement f(x) = sin5x ; [π/5,2π/5] finding the point c which f'(x) =0. I understand the theorem and how to complete it, my issue is using the triq functions Homework Equations f'(x) = 5cos5x The Attempt at a Solution 5cos5x=0 cos5x=0 5x=π/3 x=π/15 my answer is not correct, I am...

Hello all! I am new here on Physics Forums, I am returning to school and plan to major in Mathematics. I spent ten years in the US military and was a horrible student, nevertheless I am exciting about my upcoming challenge and sure I'll be posting questions here shortly. Jonathan Kyle