Asked by Alice

How can I find the domain and range of a function from the equation of that function(without using a graph of any kind)? For example, how would I find the domain and range of f(x)=3sin(2x)?

Thank you for your help!

Answers

Answered by Damon
there is a y for every x from -oo to + oo so domain is all real x
y never gets higher than 3 or lower than -3 so range is from -3 to +3
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