differentiation

Question: If $y=a+b{{x}^{2}};a,b$ arbitrary constants, then

1) $\frac{{{d}^{2}}y}{d{{x}^{2}}}=2xy$

2) $x\frac{{{d}^{2}}y}{d{{x}^{2}}}=\frac{dy}{dx}$

3) $x\frac{{{d}^{2}}y}{d{{x}^{2}}}-\frac{dy}{dx}+y=0$

4) $x\frac{{{d}^{2}}y}{d{{x}^{2}}}=2xy$

Solution:

Explanation: No Explanation

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