Q. Using implicit differentiation, find dxdy.−x2y4−4x2y3=2x+5
Apply Product Rule and Chain Rule: We need to differentiate both sides of the equation with respect to x. Remember that y is a function of x, so we will use the product rule and the chain rule for differentiation.
Differentiate −x2y4: Differentiate the left side of the equation −x2y4−4x2y3 with respect to x. For the first term −x2y4, we apply the product rule: dxd(uv)=udxdv+vdxdu, where u=−x2 and v=y4.
Differentiate −4x2y3: Differentiate u=−x2 with respect to x to get dxdu=−2x.
Combine Left Side Terms: Differentiate v=y4 with respect to x using the chain rule to get dxdv=4y3dxdy.
Differentiate Right Side: Now apply the product rule to the first term: −x2y4 becomes −2xy4−4x2y3(dxdy).
Combine Terms and Factor: Repeat the process for the second term −4x2y3. Differentiate u=−4x2 to get dxdu=−8x.
Isolate dxdy: Differentiate v=y3 with respect to x using the chain rule to get dxdv=3y2(dxdy).
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2(dxdy).
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.Differentiate the right side of the equation 2x+5 with respect to x to get 2.
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.Differentiate the right side of the equation 2x+5 with respect to x to get 2.Now we have the equation −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy=2.
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.Differentiate the right side of the equation 2x+5 with respect to x to get 2.Now we have the equation −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy=2.Combine like terms and factor out dxdy: −2xy4−8xy3=2+dxdy(4x2y3+12x2y2).
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.Differentiate the right side of the equation 2x+5 with respect to x to get 2.Now we have the equation −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy=2.Combine like terms and factor out dxdy: −2xy4−8xy3=2+dxdy(4x2y3+12x2y2).Solve for dxdy by isolating it on one side of the equation: −4x2y31.
Simplify dxdy: Now apply the product rule to the second term: −4x2y3 becomes −8xy3−12x2y2dxdy.Combine the differentiated terms for the left side of the equation: −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy.Differentiate the right side of the equation 2x+5 with respect to x to get 2.Now we have the equation −2xy4−4x2y3dxdy−8xy3−12x2y2dxdy=2.Combine like terms and factor out dxdy: −2xy4−8xy3=2+dxdy(4x2y3+12x2y2).Solve for dxdy by isolating it on one side of the equation: −4x2y31.Simplify the expression for dxdy if possible. In this case, there is no further simplification.
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