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## Main Question or Discussion Point

Guys Can anyone help me in this? I need a function (cos or sin) maximum at 7Pi/4 and at the same time changes sign under phi->phi+Pi with 0< phi< 2Pi....Thank you

- Thread starter Physicslad78
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- #1

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Guys Can anyone help me in this? I need a function (cos or sin) maximum at 7Pi/4 and at the same time changes sign under phi->phi+Pi with 0< phi< 2Pi....Thank you

- #2

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Do you know how to shift and stretch functions?

- #3

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- #4

HallsofIvy

Science Advisor

Homework Helper

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[tex]sin(x+ \pi)= -sin(x)[/tex]

That's no problem at all!

That's no problem at all!

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