Q. Using implicit differentiation, find dxdy.−6y3−5x4+3x+6y−4xy=5
Apply Chain Rule: We will differentiate each term of the equation with respect to x, remembering to use the chain rule for terms involving y, since y is a function of x.
Differentiate −6y3: Differentiate −6y3 with respect to x to get −18y2(dxdy).
Differentiate −5x4: Differentiate −5x4 with respect to x to get −20x3.
Differentiate 3x: Differentiate 3x with respect to x to get 3.
Differentiate 6y: Differentiate 6y with respect to x to get 6dxdy.
Differentiate −4xy: Differentiate −4xy with respect to x. This requires the product rule: the derivative of the first function (−4y) times the second function (x) plus the first function times the derivative of the second function (1). This gives us −4y−4xdxdy.
Differentiate constant 5: Differentiate the constant 5 with respect to x to get 0.
Combine differentiated terms: Combine all the differentiated terms to form the new equation: −18y2dxdy−20x3+3+6dxdy−4y−4xdxdy=0.
Collect terms: Now, we collect all the terms with dxdy on one side and the rest on the other side: −18y2dxdy+6dxdy−4xdxdy=20x3−3+4y.
Factor out dxdy: Factor out dxdy from the left side of the equation: dxdy(−18y2+6−4x)=20x3−3+4y.
Solve for (dxdy):</b>Solvefor$(dxdy) by dividing both sides of the equation by (−18y2+6−4x): (dxdy)=−18y2+6−4x20x3−3+4y.
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