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Solve the differential equation. dy/dx=x√y

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User Enigma
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1 Answer

1 vote

To solve the given differential equation, we must first recognize that it's in a form of a first-order differential equation, which can be written as dy/dx = f(x, y).

Here, our function f(x, y) = x√y. This is considered as a separable differential equation because we can rearrange terms in order to use simple integration to solve it. Here's the step-by-step process:

1. Separate the variables by bringing the relevant terms together and rewrite √y as y^(1/2):

x dx = y^(-1/2) dy

2. Now, we integrate both sides with respect to their variables.

∫x dx = ∫y^(-1/2) dy

3. After the integration, the equation should look like this:

x^2/2 = 2y^(1/2) + C1, where C1 is the constant of integration. Notice that we use a new constant C1 because it may be different from the constant C we would get if we were to integrate the left side.

4. Now, clearance of fraction by multiplying both sides by 2 yields

x^2 = 4*y^(1/2) + 2C1

5. Raise both sides of the equation to power of 2 to remove the square root.

(x^2)^2 = (4*y^(1/2) + 2C1)^2

6. Simplify both sides to get the equation in terms of y = f(x):

y(x) = (C1^2)/4 + (C1*x^2)/4 + x^4/16

This represents the general solution to the given differential equation.

Ans : y(x) = (C1^2)/4 + (C1*x^2)/4 + x^4/16

answered
User Markus Jarderot
by
9.0k points
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