1.

Write order and degree (if defined)of differential equations: \(\cfrac{dy}{dx}+sin\left(\cfrac{dy}{dx}\right)=0\)dy/dx+sin(dy/dx)=0

Answer»

The order of a differential equation is the order of the highest derivative involved in the equation. So the 

order comes out to be 1 as we have \(\cfrac{dy}{dx}\) and the degree is the highest power to which a derivative is raised. But when we open Sin x as \(x-\cfrac{x^3}{3!}+\cfrac{x^5}{5!}-\cfrac{x^7}{7!}+-----\) . Also, the equation has to be polynomial, and

opening thus, Sin function will lead to an undefined power of the highest derivative. Therefore the degree is not defined. 

So the answer is 1, not defined.



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