Recent content by tinytimtams

YAY! Thank you so much! You've been so helpful. Goodnight :) Tam

Okay... pleaaaaaaase tell me I'm closer now?! I hadn't seen your edits before my last attempt so hopefully I might be on the right track? **sorry it didn't rotate, I think I'm getting sleepy, 2.22am here!**

:( thanks. Is the way I wrote the rule out correct? I'll go back from there. Any other hints?

I'm stuck again... with the quotient rule, is any of this right?

Thanks, I'll keep trying to evaluate the quotient rule... was I right to assume previously that the derivative of sqrt(tan3) =0?

I'm really grateful for your help, I'm terrible at Maths and this question is doing my head in! So from the attached, if I figure out how to calculate the end result of the quotient rule (in red)... then I still apply the product rule for 4*(result from quotient rule)? I wasn't sure if the...

Ahhhh, does that mean that within the brackets it will simplify to 27+1? Because of the rule that you previously posted?

Thank you for your help! I've just read your post DimReg so I'm guessing my third attempt isn't correct either! *sigh*

Sorry it should be the second one... no power... (sqrt(tan3)). I'll have a go at simplifying.

Thanks for your reply. I've had another attempt and attached the working. I've tried to write neatly... :D

Homework Statement Simplify the function and find the derivative; (Attached) Homework Equations I've had a go at the question (see below) trying to use trigonometric identities. The Attempt at a Solution I somehow arrived at 1/7 - 3/2sec^2, but I'm not sure that this is correct!