Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
let a_1 = 1 and a_n = a_(n-1) + n para n >= 2. Encontre uma fórmula explícita para a_n
let a_1 = 1 and a_n = a_(n-1) + n para n >= 2. Encontre uma fórmula explícita para a_n
Natural Language
Math Input
Extended Keyboard
