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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §5.7 The Fundamental Theorem and Its Applications, #26 · Calculus · Integrals

Example 2 said that … does not really depend on … (or…

Example 2 said that $\int_{2 x}^{3 x} d t / t$ does not really depend on $x$ (or $t$ !). Substitute $xu$ for $t$ and watch the limits on $u$ .

This exercise builds on another exercise in its source book, which isn't shown here.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §5.7 The Fundamental Theorem and Its Applications, #26

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