princewifi: The gradient of the function f(x,y) = −(cos2x + cos2y)2 depicted as a projected vector field on the bottom plane

princewifi: The gradient of the function f(x,y) = −(cos2x + cos2y)2 depicted

[AnalCowgirl ] [AmyAnderssen ] [AnOralFixation ]

princewifi: The gradient of the function f(x,y) = −(cos2x + cos2y)2 depicted as a projected vector field on the bottom plane

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