Recent content by C.S

  1. C

    Explinations needed, second degree linear equations with a constant

    Thanks for all your help, the maths teacher said it was a last add in the test so that no one could get it all right, no wonder especially in the time given. I will try to meditate all of that and see if I can do it again.
  2. C

    Explinations needed, second degree linear equations with a constant

    Most people in my class did the same, any ideas though?
  3. C

    Explinations needed, second degree linear equations with a constant

    I thought ay"+by'+cy=0 gave us ar^2+br+c=0, in my case c=0. I do know how to find particular solutions. I'm going back into class, I will check back later. Thank you for your help.
  4. C

    Explinations needed, second degree linear equations with a constant

    Yes I do, y0(t)=C1.e-3t+C2 with (C1,C2) →ℝ I believe that's correct.
  5. C

    Explinations needed, second degree linear equations with a constant

    Hello, I am in need of explinations on how to resolve second degree linear equations with a constant. I had a maths test last saturday and this was the last question : Resolve y"+3y'+2=cos(t) Having almost fallen into the trap of resolving y"+3y'+2y=cos(t), I passed the 2 over by cos(t)...
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