Question

derivative qn

Answer 1

figured out this one ?

Answer 2

yup! thanks!(: i just figured out how to work backwards(: like in this qn, f(a) =2, f(a+h)=(16+h)^1/4. (^1/4) is the clue thus, if f(x)=x^1/4 =2 then a=16. (:

Answer 3

so f'(x) = d/dx x^1/4 = (x^(3/4))/4, f'(16)= 1/32, isit correct?

Answer 4

Excellent !!!!
thats correct !!

Answer 5

thank you! :D

Answer 6

thank yourself :))

Answer 7

nah, i analyzed the previous qn i asked you, the same type but just different variables, finally got what u mean by working backwards, thanks!(:

Answer 8

another f(x) that wud work here is :-
\(\sqrt[4]{x+16}\), and a = 0

Answer 9

i got this first, cuz was looking for some function at a = 0
but x^1/4 looks more elegant... :)

Answer 10

i see.. ya, no wonder the previous qn you used a=0 also haha, anyways either way it must end up the same (:

Answer 11

yup ! there can be many f(x) and a's

Answer 12

for all of them, f'(a) will endup 1/32