Timeline for Arithmetical Progression

Current License: CC BY-SA 4.0

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Jun 4 '21 at 21:54 comment added Nij That first formula should be an l, not a 1, for "last term".
Jun 4 '21 at 21:47 comment added Wasp Thank you for the input. Here are some more formulae they list: S = (1 + a)/2 * n and 1/2n[2a + (n - 1)d].
Jun 4 '21 at 19:25 history answered Nij CC BY-SA 4.0