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| Hi, I'm new to Mathematica. I have the function: f[x_,y_] = a1 (1 - (b1/(b1 + c f1 x))^(r1/r2)) + a3 (1 - (b3/(b3 + c f3 (1 - x - y)))^(r5/r6)) + a2 (1 - (b2/(b2 + c f2 y))^(r3/r4)) ![enter image description here][1] The... |