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    Box Muller transform

    Can i use box muller transform to generate a distribution with two different sigma (i.e. sigma_x and sigma_y)? I want to generate a random gaussian angle (C) relative to z axis on circle plane, then set the angle relative to the x, A and y axis, B, wrt to the original angle. However, I want...
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    Help understanding the Del operator

    del is partial differentiation operator in x/y/z. It's for 3 dimension.