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प्रश्न
Choose the correct alternative:
If w(x, y, z) = x2(y – z) + y2(z – x)+ z2(x – y) then `(del"w")/(delz) + (del"w")/(dely) + (del"w")/(delz)` is
पर्याय
xy + yz + zx
x(y + z)
y(z + x)
0
उत्तर
0
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