If z = xy l n(xy), then

Engineering Maths · Q248

Calculus

Engineering and GATE · Engineering Maths · question 248

Q248

If z = xy

l

n(xy), then

x \frac{\partial z}{\partial x} + y \frac{\partial z}{\partial y} = 0

y \frac{\partial z}{\partial x} = x \frac{\partial z}{\partial y}

x \frac{\partial z}{\partial x} = y \frac{\partial z}{\partial y}

Answer

y \frac{\partial z}{\partial x} + x \frac{\partial z}{\partial y} = 0

Answer: Option C

Answer: Option C

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