The number of points

MATHEMATICS · Single correct · AP · Calculus AB · Differentiation: Definition and Fundamental Properties · Differentiation: Definition and Fundamental Properties

Problem

The number of points, at which the function f(x)=∣2x+1∣−3∣x+2∣+∣x2+x−2∣,x∈Rf(x) = |2x + 1| - 3|x + 2| + |x^2 + x - 2|, x \in R is not differentiable, is (a) 5 (b) 3 (c) 4 (d) 2

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