Question
Question: If f(x) = 2<sup>x</sup> and g(x) = 3<sup>x</sup>, then \(\frac{f'(0) - g'(0)}{1 + f'(0)g'(0)}\) =...
If f(x) = 2x and g(x) = 3x, then 1+f′(0)g′(0)f′(0)−g′(0) =
A
1+log6log32
B
1+log6log6
C
1+log2log3log32
D
0
Answer
1+log2log3log32
Explanation
Solution
f(x) = 2x
⇒ f ′(x) = 2x log 2
⇒ f ′(0) = log 2
g(x) = 3x
⇒ g ′(x) = 3x log 3
⇒ g ′(0) = log 3
= (log 2 – log 3) / (1 + log 2 log 3)