Q. Using implicit differentiation, find dxdy.ycos(3x+5y)=−3xy−3
Given Equation: We are given the equation ycos(3x+5y)=−3xy−3 and we need to find the derivative of y with respect to x using implicit differentiation.
Implicit Differentiation: Differentiate both sides of the equation with respect to x. Remember to use the product rule for ycos(3x+5y) and the chain rule for cos(3x+5y) since y is a function of x.
Left Side Differentiation: Differentiating the left side ycos(3x+5y) with respect to x gives us:y′cos(3x+5y)−ysin(3x+5y)(3+5y′), where y′ denotes dxdy.
Right Side Differentiation: Differentiating the right side −3xy−3 with respect to x gives us:−3y−3xy′.
Combine Equations: Now we have the equation: y′cos(3x+5y)−ysin(3x+5y)(3+5y′)=−3y−3xy′.
Isolate y′: We need to solve for y′. To do this, we'll collect all terms involving y′ on one side of the equation and the rest on the other side.
Rearrange Terms: Rearrange the terms to isolate y′:y′cos(3x+5y)+ysin(3x+5y)⋅5y′−3xy′=−3y−ysin(3x+5y)⋅3.
Factor Out y′: Factor out y′ from the left side of the equation:y′(cos(3x+5y)+5ysin(3x+5y)−3x)=−3y−3ysin(3x+5y).
Divide to Solve for y′: Divide both sides by (cos(3x+5y)+5ysin(3x+5y)−3x) to solve for y′:y′=cos(3x+5y)+5ysin(3x+5y)−3x−3y−3ysin(3x+5y).
Final Derivative: Now we have the derivative of y with respect to x: dxdy=y′=cos(3x+5y)+5ysin(3x+5y)−3x−3y−3ysin(3x+5y).
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