I am trying to see some results for my sequence in Wolfram Alpha, but I don't know how to enter the "n" letter as an index. My sequence is a_(n+1) = ((3a_n)+2)/5. The reddit answer with underscores does not help a­­­­_(n+1) = (3a_n+2)/5, neither does the subscript function. subsrcript[a­­­­, n+1] = (3*subscript[a, n]+2)/. What is the right syntax?


You can try { and }. Just have a look at : http://www.wolframalpha.com/input/?i=a%C2%AD%C2%AD%C2%AD%C2%AD_%7Bn%2B1%7D+%3D+(3a_%7Bn%7D%2B2)%2F5

  • $\begingroup$ The what is this ( reference.wolfram.com/language/ref/Subscript.html) documentation for? It cleary shows the result. $\endgroup$ – S4NNY1 Aug 21 '18 at 15:19
  • $\begingroup$ They make a distinction (and they are right) between a sequence (which they see as a function) and a subscript which is only an indexation. $\endgroup$ – tmaths Aug 21 '18 at 15:21
  • $\begingroup$ Ok, so that is the difference. Thanks. $\endgroup$ – S4NNY1 Aug 21 '18 at 15:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.