Question
Asked Oct 19, 2019
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For the quadratic function f(x)=x^2+4x, answer part (a) below

​(a) Determine the domain and the range of the function (write the answer in interval notation).
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Expert Answer

Step 1

Consider the given function.

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f (x )=x2+ 4x

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Step 2

Part (a)

To find the domain of the given function.

Since the function f(x) is defined for all real values of x.

Therefore, the domain is all real values.

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i.e.Domain (0,00)

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Step 3

Now, to find the range of the given function.

The values of the f...

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f (x)= y x 4x +4 x24x+ 4 y4= y+4=(x+2) x2 = +4 y4 2 x = =

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