Q. Using implicit differentiation, find dxdy.−5x2y4−4x2y3=3−2x
Differentiate Equation: Differentiate both sides of the equation with respect to x, remembering to use the product rule for terms involving both x and y, and the chain rule for terms involving y since y is a function of x.
Left Side Derivative: Differentiate the left side of the equation. The derivative of −5x2y4 with respect to x is −10xy4−20x2y3dxdy using the product rule. The derivative of −4x2y3 with respect to x is −8xy3−12x2y2dxdy using the product rule.
Right Side Derivative: Differentiate the right side of the equation. The derivative of 3 with respect to x is 0, and the derivative of −2x with respect to x is −2.
Write Differentiated Equation: Write down the differentiated equation from Steps 2 and 3: −10xy4−20x2y3dxdy−8xy3−12x2y2dxdy=−2.
Collect Terms: Collect all terms involving dxdy on one side and move all other terms to the opposite side. This gives us −20x2y3dxdy−12x2y2dxdy=−2+10xy4+8xy3.
Factor Out (dxdy):</b>Factorout$(dxdy) from the left side of the equation to get (dxdy)(−20x2y3−12x2y2)=−2+10xy4+8xy3.
Solve for (dxdy):</b>Solvefor$(dxdy) by dividing both sides of the equation by (−20x2y3−12x2y2). This gives us (dxdy)=−20x2y3−12x2y2−2+10xy4+8xy3.
Simplify (dxdy):</b>Simplifytheexpressionfor$(dxdy) if possible. In this case, we can factor out an x from the numerator and an x2y2 from the denominator to get (dxdy)=−20xy3−12y2−2/x+10y4+8y3.
More problems from Simplify expressions using trigonometric identities