1 Differentiation
Order and degree of $$x^{3}\dfrac{d^{3}y}{dx^{3}}+2x^{2}\dfrac{d^{2}y}{dx^{2}}+6y=x^{4}$$ are:
1) 3, 1 2) 1, 3 3) 3, 2 4) 2, 2
$$x^{3}y_{3}+2x^{2}y_{2}+6y=x^{4}$$ $$\Rightarrow $$ order = 3 degree = 1
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