Q. If 2+y3=xy3 then find dxdy in terms of x and y.Answer: dxdy=
Write Given Equation: Write down the given equation.We have the equation 2+y3=xy3.
Differentiate with Respect: Differentiate both sides of the equation with respect to x. The left side becomes the derivative of 2 with respect to x, which is 0, plus the derivative of y3 with respect to x, which is 3y2dxdy using the chain rule. The right side becomes the derivative of xy3 with respect to x, which is y3 plus x times the derivative of y3 with respect to x, which is 3y2dxdy, using the product rule. So, we have 24.
Simplify and Solve: Simplify the equation and solve for dxdy. Subtract y3 from both sides to get 3y2dxdy−x⋅3y2dxdy=y3−y3. This simplifies to 3y2dxdy(1−x)=0.
Factor Out Common Factor: Factor out 3y2dxdy. We have 3y2dxdy(1−x)=0. Since 3y2dxdy is a common factor, we can divide both sides by 3y2, assuming y is not zero (since y=0 would make the original equation 2=0, which is not true). This gives us dxdy(1−x)=0.
Isolate and Solve: Solve for (dxdy).Divide both sides by (1−x) to isolate (dxdy), which gives us (dxdy)=(1−x)0.Since 0 divided by anything is 0, we have (dxdy)=0.
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