Q. Using implicit differentiation, find dxdy.(3x3−3y2)2=5xy
Apply Chain Rule: First, we need to apply the chain rule to differentiate both sides of the equation with respect to x. The left side of the equation is a function raised to the second power, so we'll use the chain rule to differentiate it. The right side is a product of x and y, so we'll use the product rule to differentiate it.
Differentiate Left Side: Differentiate the left side of the equation (3x3−3y2)2 with respect to x. Using the chain rule, we get 2(3x3−3y2)∗dxd(3x3−3y2). Now we need to differentiate the inside function 3x3−3y2 with respect to x.
Substitute Inside Function: Differentiate 3x3 with respect to x to get 9x2. Since y is a function of x, we need to use the chain rule to differentiate −3y2 with respect to x, which gives us −6y⋅dxdy. So the derivative of the inside function is 9x2−6y⋅dxdy.
Differentiate Right Side: Now we substitute the derivative of the inside function back into the chain rule expression. We get 2(3x3−3y2)×(9x2−6y×dxdy).
Set Equations Equal: Next, differentiate the right side of the equation 5xy with respect to x using the product rule. The derivative of 5xy with respect to x is 5y+5xdxdy.
Expand Left Side: Now we have the derivatives of both sides of the equation. Set them equal to each other to get 2(3x3−3y2)⋅(9x2−6y⋅dxdy)=5y+5x⋅dxdy.
Collect Terms: Expand the left side of the equation to simplify it. We get 2×(27x5−18x2y×dxdy−27x3y2+18y3×dxdy).
Factor Out dy/dx: Distribute the 2 on the left side to get 54x5−36x2y⋅dxdy−54x3y2+36y3⋅dxdy.
Move Term: Now we need to collect all the terms with dy/dx on one side of the equation and the rest on the other side. We get −36x2y⋅dy/dx+36y3⋅dy/dx=5y−54x5+54x3y2−5x⋅dy/dx.
Solve for dxdy: Factor out dxdy on the left side of the equation to get dxdy×(−36x2y+36y3)=5y−54x5+54x3y2−5x×dxdy.
Solve for dxdy: Factor out dxdy on the left side of the equation to get dxdy×(−36x2y+36y3)=5y−54x5+54x3y2−5x×dxdy.Move the term −5x×dxdy from the right side to the left side to get dxdy×(−36x2y+36y3+5x)=5y−54x5+54x3y2.
Solve for dxdy: Factor out dxdy on the left side of the equation to get dxdy×(−36x2y+36y3)=5y−54x5+54x3y2−5x×dxdy.Move the term −5x×dxdy from the right side to the left side to get dxdy×(−36x2y+36y3+5x)=5y−54x5+54x3y2.Now we can solve for dxdy by dividing both sides of the equation by (−36x2y+36y3+5x). We get dxdy=−36x2y+36y3+5x5y−54x5+54x3y2.
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