1
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+2
-0

If $f(x)=3 x+6, g(x)=4 x+k$ and $f \circ g(x)=g \circ f(x)$ then $k=$

A
$-9$
B
18
C
$\frac{1}{9}$
D
9
2
MHT CET 2019 2nd May Morning Shift
MCQ (Single Correct Answer)
+2
-0

If $f(x)=3 x-2$ and $g(x)=x^2$, then $(f \circ g)(x)=$

A
$3 x^2-2$
B
$3 x^2+2$
C
$3 x-2$
D
$2-3 x^2$
MHT CET Subjects
EXAM MAP