Q. If 0=5x2+5y+x3y then find dxdy in terms of x and y.Answer: dxdy=
Given Equation: We are given the equation 0=5x2+5y+x3y, and we need to find the derivative of y with respect to x, denoted as dxdy. To do this, we will use implicit differentiation, which involves taking the derivative of both sides of the equation with respect to x, while treating y as a function of x.
Differentiate 5x2: First, we differentiate the term 5x2 with respect to x. The derivative of 5x2 with respect to x is 10x.
Differentiate 5y: Next, we differentiate the term 5y with respect to x. Since y is a function of x, we apply the chain rule and get 5dxdy.
Differentiate x3y: Now, we differentiate the term x3y with respect to x. This requires the product rule since it is the product of two functions of x. The derivative of x3y with respect to x is 3x2y+x3(dxdy).
Combine Derivatives: Now we combine the derivatives we found in the previous steps and set the derivative of the entire left side of the equation equal to the derivative of the right side, which is 0. This gives us the equation 10x+5dxdy+3x2y+x3dxdy=0.
Solve for (\frac{dy}{dx}): We need to solve for \((\frac{dy}{dx}), so we group the terms containing \((\frac{dy}{dx}) on one side and the rest on the other side. This gives us \(\(5(\frac{dy}{dx}) + x^{3}(\frac{dy}{dx}) = −10x - 3x^{2}y.
Factor Out (dxdy):</b>Factorout$(dxdy) from the left side of the equation to get (dxdy)(5+x3)=−10x−3x2y.
Final Solution: Now, we solve for dxdy by dividing both sides of the equation by (5+x3). This gives us dxdy=5+x3−10x−3x2y.