MediumDerivatives

Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §2.2 Powers and Polynomials, #41 · Calculus · Derivatives

The demand … has

This problem is about calculus in economics.

The demand $y = c / x$ has $d y / d x = - y / x$ . Show that $Δ y /Δ x$ is _not_ $- y / x$ . (Use numbers or algebra.) Finite steps miss the special feature of infinitesimal steps.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §2.2 Powers and Polynomials, #41

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