Q. If −y3+4x2−5xy=1 then find dxdy in terms of x and y.Answer: dxdy=
Differentiate Terms: To find the derivative (dxdy), we need to differentiate both sides of the equation with respect to x, treating y as a function of x (implicit differentiation).
Combine Derivatives: Differentiate each term on the left side of the equation with respect to x. The derivative of −y3 with respect to x is −3y2(dxdy) because y is a function of x. The derivative of 4x2 with respect to x is 8x. The derivative of −5xy with respect to x is −y31 because we apply the product rule: the derivative of the first function (x) times the second function (y) plus the first function (x) times the derivative of the second function (y).
Group Terms: Combine the derivatives to rewrite the equation.−3y2dxdy+8x−5y−5xdxdy=0
Factor Out: Group the terms with dxdy on one side and the rest on the other side.−3y2dxdy−5xdxdy=5y−8x
Solve for dxdy: Factor out dxdy from the left side of the equation.dxdy(−3y2−5x)=5y−8x
Solve for (dxdy):</b>Factorout$(dxdy) from the left side of the equation.(dxdy)(−3y2−5x)=5y−8x Solve for (dxdy) by dividing both sides of the equation by (−3y2−5x).(dxdy)=−3y2−5x5y−8x
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