Need some help with calc

[Xylitol]

jk nvm

 

[Brigandier]

f is a solution to that dif eq. And you can use y=1, x=4 to solve for the integration constant.

 

[dighn]

if f=y, then by satisfying the equation, it means that if you were to substitude f in place of y, the differnetial equation is still valid. that is, df/dx = 2f(3-x)

 

[Epic Fail]

Pay attention in class?

 

[Xylitol]

ty

 

[Brigandier]

Originally posted by: Xylitol

Originally posted by: dighn
if f=y, then by satisfying the equation, it means that if you were to substitude f in place of y, the differnetial equation is still valid. that is, df/dx = 2f(3-x)

oh what the
I wasn't thinking y(3-x) as a function, I was thinking y*(3-x) which is totally different.

Okay thanks - I'll try that 🙂

dy/dx does = 2*y*(3-x)

Separate the variables,. take the antiderivative and solve already.

 

[Xylitol]

k i totally forgot that you could separate out dy/dx and take the intergral on both sides of the equation.
got it thanks