## bayanhorani 3 years ago i have equation about diff. ode

1. bayanhorani

|dw:1350287734547:dw|how to solve this equation step by step

2. bayanhorani

by two methods

3. lgbasallote

are you familiar with laplace transformation? or no?

4. bayanhorani

no

5. bayanhorani

by nonhomogunes but how??????????/

6. lgbasallote

well you have to solve the left side first

7. bayanhorani

ok

8. lgbasallote

assume homogeneous for the left sde y'' + 4y'+4y = 0 do you know how to solve that?

9. bayanhorani

yes

10. bayanhorani

but the right gow????????????/

11. lgbasallote

so what do you get?

12. lgbasallote

solve the left side first

13. bayanhorani

|dw:1350288124728:dw|the left get

14. bayanhorani

how to solve right side

15. lgbasallote

you're familiar with variation of parameter right?

16. bayanhorani

how????????????????/

17. lgbasallote

what do you mean how?

18. bayanhorani

i can't solve it

19. bayanhorani

help me

20. lgbasallote

do you know variation of parameters or not??

21. bayanhorani

no

22. lgbasallote

do you know undetermined coefficients?

23. bayanhorani

no

24. lgbasallote

then what do you know?

25. bayanhorani

nothing can yiu help me and solve it step by step

26. lgbasallote

you mean to tell me....you're teacher never taught you...and still expects you to answer this??

27. lgbasallote

this is an intermediate problem in homogeneous differential equations... i don't believe your teacher never taught you the basics to this.....

28. UnkleRhaukus

step 2 solve the particular solution

29. UnkleRhaukus

should we use determination of coefficients method/?