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O $\left(2x^{2}+y^{2}+z^{2}-2yz-zx-xy\right)$ $p+\left(x^{2}+2y^{2}+z^{2}-yz-2zx-xy\right)q$ $=x^{2}+y^{2}+2z^{2}-yz-zx-2xy$
Calculus
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it is partial differential's question
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Qanda teacher - Priyanka
what I have to calculate?
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