The Student Room Group

hard c4 differential problem. need criticism/ approval of method used here.

20150527_065431.jpg To the left is my answer to the question
Attachment not found
I attached. the correct answer is 1/8pi. I am confused if I used the right method.
(edited 8 years ago)
I got to the same answer after a lot of work and trial and error. Not really sure how your differentiation works but I'll attach a copy of my workings so you can have a look. Apologies for crappy horizontal photo and text format but on a phone I'm not good at using. image.jpg
(edited 8 years ago)
Reply 2
Your work looks good. I think that's the right way. My dfferentiation was most likely not correct since r is a variable and not constant. But I assumed it as a constant. Thanks!

Quick Reply

Latest