Q. If y=5y3+2x3 then find dxdy in terms of x and y.Answer: dxdy=
Differentiation Process: To find the derivative of y with respect to x, we need to differentiate both sides of the equation with respect to x. The equation is y=5y3+2x3.
Derivative of y: Differentiate the left side of the equation with respect to x. The derivative of y with respect to x is simply dxdy.
Derivative of Right Side: Differentiate the right side of the equation with respect to x. The term 5y3 is treated as a function of x, so we apply the chain rule. The derivative of 5y3 with respect to x is 15y2⋅dxdy. The derivative of 2x3 with respect to x is 6x2.
Combining Derivatives: Combine the derivatives to form the equation: dxdy=15y2⋅(dxdy)+6x2.
Isolating dxdy: To solve for dxdy, we need to move all terms involving dxdy to one side of the equation. Subtract 15y2×dxdy from both sides to get: dxdy−15y2×dxdy=6x2.
Factoring out dxdy: Factor out dxdy on the left side of the equation to get: dxdy×(1−15y2)=6x2.
Final Derivative Solution: Divide both sides of the equation by (1−15y2) to solve for dxdy. This gives us: dxdy=(1−15y2)6x2.
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