Q. If 0=x3−y+3−5y3 then find dxdy in terms of x and y.Answer: dxdy=
Given Equation: We are given the equation 0=x3−y+3−5y3. To find (dy/dx), we need to differentiate both sides of the equation with respect to x, treating y as a function of x (implicit differentiation).
Differentiate Left Side: Differentiate the left side of the equation with respect to x. The derivative of 0 with respect to x is 0.
Differentiate Right Side: Differentiate the right side of the equation with respect to x. The derivative of x3 with respect to x is 3x2. The derivative of −y with respect to x is −dxdy (since y is a function of x). The derivative of the constant 3 with respect to x is x31. The derivative of x32 with respect to x is x34 (using the chain rule).
Combine Derivatives: Combine the derivatives to form the differentiated equation: 0=3x2−dxdy−15y2⋅dxdy.
Rearrange Equation: Rearrange the equation to solve for dy/dx: dxdy+15y2dxdy=3x2.
Factor out dy/dx: Factor out dxdy on the left side of the equation: dxdy×(1+15y2)=3x2.
Isolate dxdy: Divide both sides of the equation by (1+15y2) to isolate dxdy: dxdy=(1+15y2)3x2.
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