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How do I enter circle equations in a Function Definition?
I am trying to use Function Definitions to enter a circle eg (x – a)^2 + (y – b)^2 = r^2 so that I can then use the constant controller to vary a, b and r. How do I do this? If I enter the above equation I get the wrong graph. If I try to rearrange the equation to get it in terms of y then I get a square root involved and then I only get half of the circle shown (as the positive sqrt solution only is used). Also there doesn't seem to be an equation editor…
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