- #1

golb0016

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## Homework Statement

find k for the function so it is continuous and differentiable.

x^2-1 x<=1

k(x-1) x>1

## The Attempt at a Solution

k(x-1)=0 for x=1

k(0)=0

k = 0/0?

How do I know if the function is differentiable?