As in the C language, write "Xn" for the formula of tangents, so that X would be unknown, and n-ego is a sequence number, then I need to insert the expression X (n + 1), thanks in advance!

  • Use the same variable for the current X_n value. Your program logic should know exactly how the X_n code works for the moment. - VladD

1 answer 1

Well, for example, if you can’t wait, then X [n], but VladD is right, as a rule, this is not necessary.