I have defined a function (function "fn_E", below) and would like to determine
a. the maximum possible value of the function, and b. the coordinates where the
maximum occurs. How can I accomplish this?

Thanks!

-Mike

#declare Blob_threshold = 0.2;
#declare Blob_start = 1;
#declare Blob_radius = 1;
#declare fn_A = function { pow(x+1,2) + pow(y,2) + pow(z,2) - pow(Blob_radius,2)
};
#declare fn_B = function { pow(x-1,2) + pow(y,2) + pow(z,2) - pow(Blob_radius,2)
};
#declare fn_C = function { Blob_start + Blob_threshold }
#declare fn_D = function { pow(Blob_threshold, fn_A(x,y,z)) +
pow(Blob_threshold, fn_B(x,y,z)) - fn_C(x,y,z) };
#declare fn_E = function { max(0,fn_D(x,y,z)) };

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