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This question already has an answer here:

I'm trying to perform a basic plot to show that two equations align, but I'm not getting any results.

Plot[{[Pi]*Cos (3 x - [Pi]), [Pi] * Sin (3*[Pi] - 3 x)}, {x, -3 [Pi], 3 [Pi]}]

To me this seems fairly straightforward, but I'm getting a graph without the functions.

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marked as duplicate by Jens, Verbeia Mar 15 '13 at 5:41

This question was marked as an exact duplicate of an existing question.

related: – Verbeia Mar 15 '13 at 5:41

Found the answer quicker than I thought. I was using "(" and ")" for Sin and Cos when I should have been using "[" and "]". Rookie mistake.

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