Q. If 5y=−xy2−x then find dxdy in terms of x and y.Answer: dxdy=
Differentiate with respect to x: Differentiate both sides of the equation with respect to x. We have the equation 5y=−xy2−x. To find dxdy, we need to differentiate both sides of the equation with respect to x, using the product rule for the term −xy2 and remembering that y is a function of x. Differentiating the left side: dxd(5y)=5⋅dxdy Differentiating the right side: dxd(−xy2−x)=dxd(−xy2)+dxd(−x) For the first term, we use the product rule: x0 Let x1 and x2, then x3 and x4 So, x5 And x6 Combining the derivatives, we get: x7 Now we equate the derivatives of both sides: x8
Derivative calculation: Solve for (dy)/(dx).We now have an equation with (dy)/(dx) on both sides:5⋅(dy)/(dx)=−y2−2xy⋅(dy)/(dx)−1To solve for (dy)/(dx), we need to get all the terms involving (dy)/(dx) on one side of the equation:5⋅(dy)/(dx)+2xy⋅(dy)/(dx)=−y2−1Factor out (dy)/(dx):(dy)/(dx)⋅(5+2xy)=−y2−1Now, divide both sides by (5+2xy) to isolate (dy)/(dx):(dy)/(dx)0
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