Q. If −2x3−y3−4x2−4−3x=0 then find dxdy in terms of x and y.Answer: dxdy=
Differentiate with respect to x: We are given the equation −2x3−y3−4x2−4−3x=0. To find 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 with respect to x. For terms involving only x, we use the power rule. For the term involving y, we use the chain rule, remembering to multiply by dxdy because y is a function of x. dxd(−2x3)=−6x2 dxd(−y3)=−3y2⋅(dxdy) dxd(−4x2)=−8x dxd(−4)=0 x0
Isolate term with dy/dx: Combine the derivatives to get the differentiated equation:−6x2−3y2∗(dxdy)−8x−3=0
Solve for dxdy: Now, we need to solve for dxdy. To do this, we isolate the term involving dxdy on one side of the equation:\(-3y^2 \cdot \left(\frac{dy}{dx}\right) = 6x^2 + 8x + 3
Divide by −3y2: Divide both sides by −3y2 to solve for dxdy:dxdy=−3y26x2+8x+3
Simplify expression: Simplify the expression for dxdy:dxdy=−y22x2−3y28x−y21
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