For 2a:
I am going to use ln instead of log.
Let
If you must use log, then it's base is 10 and the limit will be 10 instead of e.
Then we have
So, since we have , see what b is now?.
Hi Im trying to do Q1 and Q2(a) on this past exam sheet and am having alot of trouble . I attached the Pdf cos im not sure how to use LAtex.
Any help is very much appreciated
Q1b Do i need to calculate the partial derivatives using the definition. im confused s the function is defined in 2 parts. If you can calculate the directional derivatives at (0,0) how can you also show that it is NOT differentiable at (0,0)
Q2(a) I get b =Log(m)/Log(e) might be wrong but then i cant see how to use that for the next part.
THANKS!
Hi I still need help with Q 2 b. on the attached PDF. I need to know this for the exam tomorrow.
What i have done so far is calculated the partial derivatives of x and y and i presume i have to do it using some general unit vector and then use the directional deravitive formula and fill it in at the point (0,0)
But then when i fill this in i get 0 as the denominator
OR is it enought to go that far ant not fill in (0,0)
Thanks in advance
Niall101