Question: Simplifying a piecewise function

Hey guys

I have a question using the piecewise function:

fa := unapply(piecewise(0 < x and x < a, k1, a < x and x < b, k2), x);

simplify(fa(x)) assuming 0 < a, 0 < x and x < a;

It should return k1, but it doesn't. Does anyone have a solution?

Sincerely,

Oliveira

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