Amber D.

asked • 05/01/21

graph y=3-2cos(x-pi/2) over two periods

so far I have period: 2pi , amp: 2 , horizontal shift: pi/2 , vertical shift: 3, shifts up but I can't figure out how to find the points to graph.




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Mark M. answered • 05/01/21

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Can you draw


y = 2 cos x?

Then flip it over the x axis (that takes care of the "-".

Rewrite the graph (keeping the same shape) π/2 shifted

Rewrite the graph (keeping the same shape and move it up 3 units.

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Amber D.

I don't understand. the period would be 2pi so that's the x coordinate but how would I find Y to graph it
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05/01/21

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