Homework Statement
Attached file
Homework Equations
Attached file[/B]The Attempt at a Solution
Attached fileSorry, I am in mobile, so i cant
Write all the things,
Homework Statement
y'=-5xy, y=?
The Attempt at a Solution
i solved that,
dy/dx=-5xy
dy/y=-5x dx
∫(1/y)dy=∫-5x dx
= ln(lyl)= -2.5x^2+C
so, y=+- e^(-2.5x^2+C)
=+-K*e^(-2.5x^2)
but the answer is y=K*e^(-2.5x^2)
how can i understand this?
just shoud...
In my class, I learned about a First-order ODEs,
and solvable and unsolvable.
example in case solvable ODEs)
dy/dt=t/y
dy/dt=y-t^2
example in case unsolvable ODEs)
dy/dt=t-y^2
but , i don't know how distinguish those.
please, teach ME! : ( as possible as easily !