Customize x- and y-axis grid units?

Greg shared this question 1 month ago
Needs Answer

I would like to customize my major gridlines to be, for example, π/12 units apart with 6 minor gridline units in between. Is there a way to do this?

I noticed that typing in "/12" after π on Setting|x-Axis|Unit the resulting graph is incorrect for the function f: y=-2 sin(6 (x+(π)/(4)))+3.

Thank you!

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