Let y = x^2 + 3x(adsbygoogle = window.adsbygoogle || []).push({});

and the question is Find [itex]\frac{dy^2}{dx^2}[/itex]

then how do I understand this token? is it [itex]\frac{d(y^2)}{d(x^2)}[/itex]

or [itex]\frac{(dy)^2}{(dx)^2}[/itex] = [itex](\frac{dy}{dx})^2[/itex]

or what ?

BTW: it's not wrong written, namely, not [itex]\frac{d^2y}{dx^2}[/itex]

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# What's meant by this?

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