Find the equation of the graph. Show steps/reasons for each aspect.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter8: Introduction To Functions
Section8.2: Points, Lines, And Their Graphs
Problem 29WE
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Find the equation of the graph. Show steps/reasons for each aspect.

Expert Solution
Step 1

Consider the given graph.

It represents a periodic function.

The given graph resembles to that of the trigonometric function y=tant.

Hence, we can conclude that the given graph represents a variation of tangent function.

Note that, the tangent function is periodic with period π.

 

Step 2

The general form of a function which is a variation of the tangent function is given by y=AtanBt where A is the stretching factor and B is the value such that period=πB.

From the given graph, we can observe that the function curve repeats itself in the intervals -π2,-π6, -π6,π6 and π6,π2.

The length of each of the above interval is the same as -π6--π2=π3, π6--π6=π3, π2-π6=π3.

Thus, the period of the given function is π3.

Substituting the value period=π3 in period=πB, we get π3=πB.

This implies that B = 3.

Substituting the value B = 3 in y=AtanBt, we get the function y=Atan3t.

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