Mathematics

Mathematics

Problem

In Exercises 21 and 22, estimate the slope of the tangent line to the graph of the function, if it exists, at the indicated points. 21. f(x)=∣x∣f(x)=|x| at x=−2,2x=-2,2, and 0 . 22. f(x)=tan⁡−1(x+1)f(x)=\tan ^{-1}(x+1) at x=−2,2x=-2,2, and 0 .

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