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Precalculus 19 Online
OpenStudy (anonymous):

how do i find the range of a function?

OpenStudy (anonymous):

Well first you need to understand two things: A function takes in inputs, and for each input, it gives an output. The range of the function is a list of all possible OUTPUTS. This is different from the domain, which would be the list of all possible INPUTS.

OpenStudy (anonymous):

This understanding is key. It will help you know what to look for regardless of how the function is given to you.

OpenStudy (anonymous):

Ask for more clarification if you don't understand.

OpenStudy (anonymous):

i understand but how do you find the range in an equation like (x-2)^2 +2

OpenStudy (anonymous):

One way is to make a t-table, start plugging in x values (Inputs) and see what kinds of outputs you are getting. There should be a pattern.

OpenStudy (anonymous):

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OpenStudy (anonymous):

Does that give you any ideas about what kinds of outputs you can get?

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