Gravity is optional

On 2D Inverse Problems · Wikibooks

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    From Wikibooks, under CC BY-SA 4.0, as the source states it. This page at Wikibooks.

    Gravity is optional

    The orthogonal gravity family of curves in 2D with the slopes .

    The prompt: Could you regenerate the image to show orthogonal curves y=C-x^2/2 and y=C+ln(x) with negative reciprocal slopes!?