Grapher – Using Functions to Define Parametric Curves

grapher

I'm drawing a curve using matrices in Grapher, for instance:

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However, any time I try to use a function (i.e. a(x)) as a matrix element:

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I get errors:

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I've looked through the unofficial manual, but it doesn't specifically say. If I'm not able to use a function as an element, I'd have to re-type the expression in multiple locations whenever I want to change it 🙁

Best Answer

Just define function a in terms of t rather than in terms of x. For example, the following

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produces 3 turns of a helix

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