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Question

Prove that y2=4a(x+a) is the solution of differential equation y×[1(dydx)2]=2xdydx

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Solution

Consider the given equation.

y2=4a(xa) …… (1)

Given differential equation is,

y[1(dydx)2]=2xdydx …… (2)

Differentiate equation (1) with respect to x.

2ydydx=4a

dydx=2ay …… (3)

Now, substitute this value in the LHS of equation (2).

y[1(2ay)2]

y24a2y

4a(x+a)4a2y

4axy

2×(dydx)×(x)

2xdydx

RHS

Hence, proved.

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