A) 5
B) 4
C) 3
D) 2.2
Correct Answer: C
Solution :
[c] \[f(x)=(kx+{{e}^{x}})h(x)\] Diff. \[f'\left( x \right)=\left( kx+{{e}^{x}} \right)h'\left( x \right)+h\left( x \right)\left( k+{{e}^{x}} \right)\] put \[x=0\] \[18=-2+5\left( k+1 \right)\] \[k=3\]You need to login to perform this action.
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