The value of m for which the function \[f(x)=\left\{ \begin{align} & m{{x}^{2}},\,x\le 1 \\ & \,\,\,\,2x,\,x>1 \\ \end{align} \right.\] is differentiable at \[x=1\] ,is [MP PET 1998]

The value of m for which the function

1.	The value of m for which the function \[f(x)=\left\{ \begin{align} & m{{x}^{2}},\,x\le 1 \\ & \,\,\,\,2x,\,x>1 \\ \end{align} \right.\] is differentiable at \[x=1\] ,is [MP PET 1998]
A.	0
B.	1
C.	2
D.	Does not exist
Answer» E.

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The value of m for which the function \[f(x)=\left\{ \begin{align} & m{{x}^{2}},\,x\le 1 \\ & \,\,\,\,2x,\,x>1 \\ \end{align} \right.\] is differentiable at \[x=1\] ,is [MP PET 1998]

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