If f(x)=x+1 and (f@g)(x)=x^2+3x+2, which of the following is g(x)?
A) x+2
B) x^2+3x
C)x^2+3x-1
D)x^2+3x+1
E)(x+1)^2(x+2)
A) x+2
B)
C)
D)
E)
2 Answers
Mar 17, 2018
D)
Explanation:
Proposing
we have
now comparing coefficients
hence
so the answer is D)
Mar 18, 2018
Explanation:
Since the function
Quick check :
Thus
So