0
$\begingroup$

imagine is an example of what im trying to figure out

I I'm trying to solve this problem with mathematica but the code keeps giving me an error.

Improve this question
$\endgroup$
2
  • 2
    $\begingroup$ A first step is to write this equation in Mathematica syntax. Have a look at reference page of DSolve to get an idea how to do that. If have that code and it does not work, people would need to see it (i.e. you should post it) otherwise it's not possible to identify the issue. $\endgroup$ Commented Apr 16, 2019 at 15:04
  • 2
    $\begingroup$ You should include the code that is giving you the error. $\endgroup$ Commented Apr 16, 2019 at 15:12

1 Answer 1

Reset to default
3
$\begingroup$ 
Eq1 = x1'[t] == x1[t] + x2[t] + x3[t] + Exp[t]; Eq2 = x2'[t] == -x1[t]^2 + x2[t]^2 + x3[t]^2 + Cos[10*t]; Eq3 = x3'[t] == x1[t] - x2[t] + x3[t] + Sin[5*t]; sol = First@NDSolve[{Eq1, Eq2, Eq3, x1[0] == 1, x2[0] == -1, x3[0] == 1}, {x1[t], x2[t], x3[t]}, {t, 0, 5}] Plot[(x1[t]^2 + x2[t]^2 + x3[t]^2)^(1/2) /. sol, {t, 0, 5}]
Improve this answer
$\endgroup$

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.