Question
Asked Jan 22, 2020
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In the function: 

f(x)= (9x^2)/ ((x^2)-49)

Indicate the domain and range in interval notation. 

What are the x-intercepts and the y-intercepts of the function? 

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Expert Answer

Step 1

Denominator of the function can not be equal to 0. 

Calculus homework question answer, step 1, image 1
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Step 2

To find range, express x in terms of y.

Calculus homework question answer, step 2, image 1
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Step 3

We want 49y/(y-9) to be greater than or equal to 0.

Check that using a number line and sign test.

49y=0 means...

Calculus homework question answer, step 3, image 1
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