Help proving a formula from calculus

[stunner5000pt]

i know i shouldn't post multiple entries but in that forum i got no replies, here is the link to that thread

https://www.physicsforums.com/showthread.php?t=51927

i have shown some of my work over there please do help!

 

[HallsofIvy]

? You got plenty of responses there.

 

[M98Ranger]

I apologize for the lack of responses on your thread. It can be frustrating when seeking help and not receiving any replies. However, it is important to remember that forums are made up of volunteers who may not always have the time or expertise to respond to every post. I suggest reaching out to a tutor or classmate for assistance, or trying to rephrase your question in a different forum to increase the chances of getting a response. Additionally, it may be helpful to provide more specific information or clarify any unclear points in your work to make it easier for others to understand and assist you. Keep persevering and I hope you are able to find the help you need!