Functions Question 235
Question: If $ f(x)=2x $ and g is identity function, then
Options:
A) $ (fog)(x)=g(x) $
B) $ (g+g)(x)=g(x) $
C) $ (fog)(x)=(g+g)(x) $
D) None of these
Show Answer
Answer:
Correct Answer: C
Solution:
$ (fog)x=2[g(x)] $ and $ (g+g),x=2,[g(x)]. $