Q. If −xy3+y−x2=0 then find dxdy in terms of x and y.Answer: dxdy=
Differentiate terms: To find the derivative dxdy, we need to differentiate the given equation with respect to x, treating y as a function of x (implicit differentiation).The given equation is: −xy3+y−x2=0.Differentiate each term with respect to x.
Product rule: Differentiate −xy3 with respect to x using the product rule dxd[uv]=u′(v)+v′(u), where u=x and v=y3. The derivative of x with respect to x is 1, and the derivative of y3 with respect to x is x0 by the chain rule. So, the derivative of −xy3 is x2.
Differentiate y: Differentiate y with respect to x.Since y is a function of x, its derivative is dxdy.So, the derivative of y is dxdy.
Differentiate −x2: Differentiate −x2 with respect to x. The derivative of −x2 with respect to x is −2x.
Combine derivatives: Combine the derivatives of each term to get the derivative of the entire left side of the equation.The combined derivative is: −y3−3xy2(dxdy)+(dxdy)−2x=0.
Solve for (\frac{dy}{dx}): Now, we need to solve for \((\frac{dy}{dx}). Group the terms containing \((\frac{dy}{dx}) on one side and the rest on the other side. \(\(3xy^{2}(\frac{dy}{dx}) - (\frac{dy}{dx}) = y^{3} + 2x.
Factor out dxdy: Factor out dxdy from the left side of the equation.\left(\frac{dy}{dx}\right)(\(3xy^{2} - 1) = y^{3} + 2x.
Isolate (dxdy):</b>Dividebothsidesoftheequationby$(3xy2−1) to isolate (dxdy).(dxdy)=3xy2−1y3+2x.