How do the slopes of the lines tangent to the graph of y = tan-1 x behave as x S ∞?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.5: Graphs Of Functions
Problem 64E
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How do the slopes of the lines tangent to the graph of y = tan-1 x behave as x S ∞?

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Step 1

The slope of the line tangent to the graph of y=tan-1x  at a point is the derivative of the function at that point.

Find the derivative of the function  y=tan-1x.

dydx=ddxtan-1(x)=1x2+1

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