Asked by Steve
Let g(x) be the reflection of f(x)=x^2+5 What is the function rule for g(x)?
I know the first part would be-x^2 but not sure if the 2nd part is a plus or minus.
I know the first part would be-x^2 but not sure if the 2nd part is a plus or minus.
Answers
Answered by
Steve
If you want to reflect the whole graph across the x-axis, that would be
-(x^2+5) = -x^2-5
Make a visit to wolframalpha.com and type in your functions. It will show the graph. Make a change a refresh, and you can see the new graph.
You can do more than one at a time by separating the equations with commas:
http://www.wolframalpha.com/input/?i=plot+y%3Dx%5E2%2B5,+y%3D+-x%5E2%2B5,+y%3D-(x%5E2%2B5)
-(x^2+5) = -x^2-5
Make a visit to wolframalpha.com and type in your functions. It will show the graph. Make a change a refresh, and you can see the new graph.
You can do more than one at a time by separating the equations with commas:
http://www.wolframalpha.com/input/?i=plot+y%3Dx%5E2%2B5,+y%3D+-x%5E2%2B5,+y%3D-(x%5E2%2B5)
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