how to use function and ode45

2 vues (au cours des 30 derniers jours)
kareem maslah
kareem maslah le 1 Fév 2019
Commenté : Rena Berman le 5 Mar 2019
hello friends,
can you help me to write that in matlab? they ask "write this equations in matlab function" for the first quastion .....the second quastion is to call the function and use ode45
when q=1 m1=2 m2=2 R1=1 R2=2 g=9.82 b=0.001
thank you
  3 commentaires
madhan ravi
madhan ravi le 1 Fév 2019
https://www.mathworks.com/help/matlab/ordinary-differential-equations.html - take your time read it , understand , try something and come back with specific question/s
Rena Berman
Rena Berman le 5 Mar 2019
(Answers Dev) Restored edit

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Guillaume
Guillaume le 1 Fév 2019
i got a complex numbers! [...] .the question is why!?
  • You're taking the root of a negative number ,
  • Or you're calculating the arcsin or arccos of a number outside [-1 1],
  • Or you're doing any other mathematical operation that can result in complex numbers
Reread the formulae that you wrote. In particular, note that x^.2 is . Perhaps you meant x.^2
  1 commentaire
kareem maslah
kareem maslah le 1 Fév 2019
thank you my friend...i didnt notice that for two hours ! the (x^.2)! now the function is working

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