Question

Use SOLVE matlab

Answer 1

\[Q'(t)=\frac{ r }{ 4 }-\frac{ r }{ 100}Q(t)\]

Answer 2

apply SOLVE to the right hand side of the differential Eq.

Answer 3

@esamalaa

Answer 4

as a function of Q

Answer 5

in order to find do i need to solve the Diff eq

Answer 6

@Loser66

Answer 7

but in general to find critical points do I need to solve ODE and then set it =0?

Answer 8

can I set ODE=0 to find the critical points

Answer 9

You mentioned something about matlab.
Are you learning about approximation techniques using matlab or something? :o

If you're just solving it to normal way,
notice that it's a `linear first order ODE`, so we can do the integrating factor method.

Answer 10

yes " approximation techniques using matlab "

Answer 11

If this is by hand,I would have done by now. Guess what it is matlab:-(

Answer 12

I have a copy of matlab installed, I don't know how to use it very well though :(
Have you learned some techniques at this point? :O

Runge-Kutta maybe?

Answer 13

qustion says apply "SOLVE" function right side of the diff eq as a function of Q. why does this identify the critical point Ql

Answer 14

"SOLVE" function? :( Hmmm

Answer 15

yes

Answer 16

it is a command in matlab

Answer 17

I don't know what the mathlab is, just see if they ask you for critical point, then ,just let the right hand side =0 and solve for Q(t) as you said above. It works well. However, if shows the value of the critical only, not critical point itself.

Answer 18

bahh i dunno ;c