Modulus of grad

Question

f:= x^2 y^5 + y^3z^4;
grad[x_, y_, z_] = Grad[f, {x, y, z}]; 
mat = {{ 2,1,0},{ 2, 1, 1 },{ 0,3,3 },{ 2,3,1 },{ 1, 3,1},{ 4,4,4 }    }; 
grad[##] & @@@ mat //TableForm

Is there a way to use Modulus 5 with grad in this Mathematica code?

score 1 · Answer 1 · answered Dec 24 '17 at 22:39

1

Mod[Apply[ grad  , mat, {1}], 5]

answered Dec 24 '17 at 22:39

Ulrich Neumann

53,729
2
23
55

thanks very much, but what does {1} means here.? – pat Dec 24 '17 at 23:02
@pat A list with length = 1 and its only element is 1. Depth specification for Apply. – user202729 Dec 25 '17 at 00:36
@pat {1} is a level specifier. Mod works elementwise so Mod[Apply[ grad , mat], 5] also works! – Ulrich Neumann Dec 26 '17 at 18:16

Modulus of grad

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