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Results tagged with calculus-and-analysis
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user 41346
Questions related to the calculus and analysis branches of Mathematica, including, but not limited to, limits, derivatives, integrals, series, and residues.
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Issue with mathematica derivative with sum
I need to obtain set of derivatives for the function f and so I use the command:
f = z (Sum[x[i], i])^2 + y Sum[x[i], i]+c;
D[f,{{x[i],y}}];
However, the answer I get is {0,0}. The derivatives indi …
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