Can these equations be considered as differential equations? Consider a differential equation with a term containing y(x_0), for example y′′-2y′+y=y(x_0) x_0 in R is a constant.

ghairbhel2

ghairbhel2

Answered question

2022-09-09

Can these equations be considered as differential equations?
Consider a differential equation with a term containing y ( x 0 ), for example
y 2 y + y = y ( x 0 )
x 0 R is a constant. My question is, does such equations fall under the category of differential equations? I have never studied any equation with such a term. If its a differential equation, then y ( x 0 ) can be considered a constant coefficient?

Answer & Explanation

Leon Webster

Leon Webster

Beginner2022-09-10Added 17 answers

Step 1
Although the term y ( x 0 ) depends on the solution y it is still a constant as it doesn't depend on x.
Let's try to solve your equation y 2 y + y = C ,, where C = y ( x 0 ) .. One solution is y ( x ) = C . The solutions of the homogeneous equation are y ( x ) = ( A x + B ) e x .. Therefore the general solutions are
y ( x ) = ( A x + B ) e x + C .
Step 2
To get y ( x 0 ) = C we must have A = B = 0.. Thus there is only the constant solution
y ( x ) = C = y ( x 0 ) .

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