2

why?

what's the error I got here? why it is wrong? How should I make this right for post?

6
  • Hmm, I don't know. What a useless message. – halirutan Dec 3 '19 at 10:26
  • 3
    However, if you wanted to post the question like this, it would have been closed because this is the site for the software Mathematica. Please ask purely math-related questions on math.stackexchange. – halirutan Dec 3 '19 at 10:29
  • 4
    The problem may have been in the title. Common title problems are too short or already in use by another question. There would have been a floating explanatory message up by the title. – m_goldberg Dec 3 '19 at 15:10
  • If the equation $q^n+a_{n-1} q^{n-1} + \cdots + a_0 = 0$ has repeated roots, then you will also have terms containing $t^r$. Anyway, check out a textbook on ordinary differential equations and/or linear circuit theory. – mjw Jan 31 '20 at 14:46
  • LaTeX doesn't work over here? – mjw Jan 31 '20 at 14:48
  • @mjw, yes, it's only enabled for the main site, and not the meta site. – J. M.'s ennui Apr 20 '20 at 11:23

You must log in to answer this question.

Browse other questions tagged .