MHB Need reassurance on "implicit" and "explicit" form

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The discussion clarifies the distinction between implicit and explicit forms of a differential equation. The implicit form derived from the equation y' = x^2/y is correctly identified as y²/2 = x³/3 + C. The explicit form is confirmed to be y = ±√(2/3 x³ + C), acknowledging both positive and negative roots. Participants agree on the correctness of these forms, reinforcing the understanding of separable equations. This highlights the importance of recognizing both forms in solving differential equations.
shamieh
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When dealing with this separable equation for example, if I'm told to solve the given D.E.

$y' = x^2/y$

so after manipulation and taking the integral I got $\frac{y^2}{2} = \frac{x^3}{3} + C$ This is the implicit form correct?

Would the explicit form be $y = \sqrt{\frac{2}{3} x^3 + C}$
 
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shamieh said:
When dealing with this separable equation for example, if I'm told to solve the given D.E.

$y' = x^2/y$

so after manipulation and taking the integral I got $\frac{y^2}{2} = \frac{x^3}{3} + C$ This is the implicit form correct?

Correct. :D

shamieh said:
Would the explicit form be $y = \sqrt{\frac{2}{3} x^3 + C}$

I would write:

$y = \pm\sqrt{\frac{2}{3}x^3+C}$
 

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