1.

Let f (x) = {{:( x "," , x lt 1), ( 2-x |"," , 1 lt x le 2"then" f (x) is), ( -2 + 3x -x ^(2)",", x gt 2 ):}

Answer»

differentiable at `x =1`
differentiable at `x =2`
differentiable at `x=1 and x =2`
NONE of these

Answer :B


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