Question

If\[ \lim_{x \rightarrow 0}(\frac{ b-ax }{ b+ax })^{\frac{ 1 }{ x }}\] is equals 9, then express "a" in terms of "b".

Answer 1

@hartnn ,@amistre64

Answer 2

divide by b in numerator and denom., what do u get ?

Answer 3

a/b in both cof.

Answer 4

u know the limit formula:
lim x->0 (1+x)^(1/x) = ??

Answer 5

yap

Answer 6

so whats the value of that limit ?

Answer 7

I got it. Thanks