Q. If −x2−x3y+1=−y then find dxdy in terms of x and y.Answer: dxdy=
Write Equation Differentiation: Write down the given equation and differentiate both sides with respect to x.Given equation: −x2−x3y+1=−yDifferentiate both sides with respect to x using the product rule for the term −x3y and the chain rule for the term −y.
Differentiate Left Side: Differentiate each term on the left side of the equation.Differentiate −x2 with respect to x to get −2x.Differentiate −x3y with respect to x using the product rule: dxd(−x3y)=−x3dxdy−3x2y.Differentiate +1 with respect to x to get 0, since it is a constant.
Differentiate Right Side: Differentiate the right side of the equation.Differentiate −y with respect to x using the chain rule: dxd(−y)=−(dxdy).
Write Differentiated Equation: Write down the differentiated equation.The differentiated equation is: −2x−x3dxdy−3x2y=−dxdy.
Isolate Terms: Isolate terms containing dxdy on one side of the equation.Add x3dxdy to both sides and add dxdy to both sides to get: −2x−3x2y=x3dxdy+dxdy.
Factor Out (dxdy):</b>Factorout$(dxdy) from the right side of the equation.We get: \(-2x - 3x^2y = (\frac{dy}{dx})(x^3 + 1).
Solve for (dxdy):</b>Solvefor$(dxdy).Divide both sides by (x3+1) to isolate (dxdy): (dxdy)=x3+1−2x−3x2y.
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