(a) Given differential equation is $\frac{d^{2}y}{dx^{2}} = \sqrt[3]{1 - \left( \frac{dy}{dx} \right)^{4}}$ $\Rightarrow$ $\left( \frac{d^{2}y}{dx^{2}} \right)^{3} = 1 - \left( \frac{dy}{dx} \right)^{4}$ $\therefore$ Order=2, degree=3
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