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Practice Questions on Functions

Author:Greg Petrics
Functions are fundamental to all that follows, and for that reason it's a good idea for you to test your knowledge by answering a few questions. You should be able to get all of these correct.

If f(x)=2x+2 what is f(2)?

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Check my answer (3)

One of the most important applications of functions is as mathematical models.

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What are the units of the output of the model of the height of the missile?

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What are the units of the input of the model of the length of the day

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If what is f(1)?

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Check my answer (3)

If f(x)=x^2 and g(x)=2x, what is g(f(2)) ?

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If f(x)=x^2 and g(x)=2x, what is f(g(2))?

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How'd you do? It's ok if you made dumb mistakes, but if you really don't understand, you should go back and review this chapter again before moving on.

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