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Let f = yx What is frac partial ^2 text f...

This question belongs to Engineering Maths Calculus
Calculus
?

Let f = yx. What is \[\frac{{{\partial ^2}{\text{f}}}}{{\partial {\text{x}}\partial {\text{y}}}}\]  at x = 2, y = 1?

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Correct Answer: Option C
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