Q. If 3y2−3y3=−y−x3 then find dxdy in terms of x and y.Answer: dxdy=
Differentiate both sides: First, we need to differentiate both sides of the equation with respect to x. The left side of the equation is in terms of y, which is a function of x, so we will use the chain rule to differentiate it. The right side is already in terms of x, so we can differentiate it directly.Differentiate the left side:(dxd)(3y2−3y3)=(dxd)(3y2)−(dxd)(3y3)Using the chain rule, we get:6y(dxdy)−9y2(dxdy)Differentiate the right side:(dxd)(−y−x3)=−(dxdy)−3x2Now we have the differentiated equation:6y(dxdy)−9y2(dxdy)=−(dxdy)−3x2
Solve for dxdy: Next, we need to solve for dxdy. To do this, we will collect all the terms involving dxdy on one side of the equation and the remaining terms on the other side.6ydxdy−9y2dxdy+dxdy=−3x2Combine like terms:(6y−9y2+1)dxdy=−3x2
Isolate dxdy: Now, we isolate dxdy by dividing both sides of the equation by (6y−9y2+1):dxdy=(6y−9y2+1)−3x2This gives us the derivative of y with respect to x in terms of x and y.