Hey, could someone please help me get started on this problem, I'm not sure how to go about it. Thanks heaps.

Where is the function h(x) = |x - 1| + |x + 2| differentiable?

(a) Give a formula for h'(x).

(b) Sketch the graphs of h and h'

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- Apr 28th 2013, 01:45 AMVishakDifferentiating with modulus function
Hey, could someone please help me get started on this problem, I'm not sure how to go about it. Thanks heaps.

Where is the function h(x) = |x - 1| + |x + 2| differentiable?

(a) Give a formula for h'(x).

(b) Sketch the graphs of h and h' - Apr 28th 2013, 01:46 AMProve ItRe: Differentiating with modulus function
- Apr 28th 2013, 01:50 AMVishakRe: Differentiating with modulus function
I think at x = 1 and x = -2. Do I have to split the function to find h'(x)?

- Apr 28th 2013, 01:57 AMProve ItRe: Differentiating with modulus function
Yes on both counts :)