Q. If x3+3xy+2y3=17, then in terms of x and y, (dy)/(dx)=a) ((x2+y)/(x+2y2))b) ((x2+y)/(x+2y))c) ((x2+y)/(2y2))d) ((x2+y)/(x+y2))
Question Prompt: Question Prompt: If x3+3xy+2y3=17, find dxdy in terms of x and y.
Implicit Differentiation: Use implicit differentiation on both sides of the equation with respect to x. Differentiate each term separately:- Derivative of x3 is 3x2.- Derivative of 3xy using the product rule is 3xdxdy+3y.- Derivative of 2y3 using the chain rule is 6y2dxdy.- The derivative of the constant 17 is 0.
Combine Derivatives: Combine the derivatives:3x2+3xdxdy+3y+6y2dxdy=0
Solve for dy/dx: Rearrange to solve for dxdy:3xdxdy+6y2dxdy=−3x2−3y(3x+6y2)dxdy=−3x2−3ydxdy=3x+6y2−3x2−3ydxdy=x+2y2−(x2+y)
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