# First and second derivative assistance please?

## Homework Statement

r = 2/(2 - cos ($$\pi$$*t))

N/A

## The Attempt at a Solution

Hello everyone, first I would just like to say (which is obvious since i'm asking :tongue: ) That it's been a long long time since i've had to do derivatives, hence my total cluelessness with this. I've had to integrate frequently in my engineering courses, but this is a problem that arose in my dynamics class...and embarrassingly enough, i'm not even sure where to begin. Could someone help me out? I'm going to be unable to proceed with my problem (it involves radius of curvatures) until I get the first and second derivatives of this bad boy. Thanks in advance!

Last edited:

berkeman
Mentor

## Homework Statement

r = 2/(2 - cos ($$\pi$$*t))

N/A

## The Attempt at a Solution

Hello everyone, first I would just like to say (which is obvious since i'm asking :tongue: ) That it's been a long long time since i've had to do derivatives, hence my total cluelessness with this. I've had to integrate frequently in my engineering courses, but this is a problem that arose in my dynamics class...and embarrassingly enough, i'm not even sure where to begin. Could someone help me out? I'm going to be unable to proceed with my problem (it involves radius of curvatures) until I get the first and second derivatives of this bad boy. Thanks in advance!