Solve for the initial value of the differential equation

In summary, The initial value problem y+(3x-xy+2)dy/dx = 0, y(1)=1 is solved by making x the dependent variable and getting the equation dx/dy= x(1-2/y)-(2/y) in linear standard form. The attempt at the solution is shown in pictures and the correctness of the solution is questioned. It is suggested to try substituting the solution back into the given equations.
  • #1
jpp46656
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0

Homework Statement



Solve the initial value problem: y+(3x-xy+2)dy/dx = 0 , y(1)=1

I couldn't separate with y as a dependent variable, so I made x the dependent variable and I get this: dx/dy= x(1-2/y)-(2/y),
in linear standard form: dx/dy+(3/y - 1)x = -2/y.


Homework Equations





The Attempt at a Solution



You can see that I attempted the solution. I'm just wondering if I performed the steps correctly and if the answer is correct.
 

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  • #2
Oh, and the work is shown in the pictures.
 
  • #3
jpp46656 said:
I'm just wondering if I performed the steps correctly and if the answer is correct.
Did you try substituting the solution back into the given equations?
 

FAQ: Solve for the initial value of the differential equation

What is the initial value of a differential equation?

The initial value of a differential equation is the value of the dependent variable at the starting point of the equation. It is usually denoted as y(0) or y(t=0).

Why is it important to solve for the initial value of a differential equation?

Solving for the initial value of a differential equation allows us to determine the specific solution of the equation. It also helps us understand the behavior of the system at the starting point and make predictions for future values.

How is the initial value of a differential equation determined?

The initial value of a differential equation is typically given in the problem or can be obtained from the initial conditions of the system. It can also be found by substituting the starting point into the equation and solving for the dependent variable.

Can the initial value of a differential equation be negative?

Yes, the initial value of a differential equation can be negative. It depends on the nature of the problem and the units being used. For example, in a population growth differential equation, the initial value can be negative if the population is decreasing at the starting point.

What happens if the initial value of a differential equation is not given or is incorrect?

If the initial value of a differential equation is not given, we cannot solve for the specific solution. This can lead to incorrect predictions and interpretations of the behavior of the system. If the initial value given is incorrect, the solution obtained will also be incorrect and may not accurately represent the system.

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