Which of the following functions has a vertical tangent at ?

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

Problem

Which of the following functions has a vertical tangent at x=0x=0? (a) h(x)=∣x∣h(x)=|x| (b) g(x)=x3g(x)=\sqrt[3]{x} (c) f(x)=x3f(x)=x^{3} (d) r(x)=1xr(x)=\dfrac{1}{x}

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