# Sigma Notation

How do I notate this:

$$\Lambda_{1}+\Lambda_{2}+\Lambda_{3}+\ldots+\Lambda_{n}=1$$

using sigma notation?

mathman
Sigma (k=1,n) lambdak = 1

mathman is correct, but here is the TeXed version:

$$\sum_{k=1}^n{\Lambda_k}=1$$

I had a guess which was exactly the same as yours except with an "i" instead of a "k".
It's not important but... Was I right?

Also; does anyone know how to imput this into a TI-nspire CAS calculator (I can't get the subscript thing to work)?

gb7nash
Homework Helper
I had a guess which was exactly the same as yours except with an "i" instead of a "k".
It's not important but... Was I right?

It doesn't matter what letter you use. It's just a placeholder. You could put puppy there if you wanted.

HallsofIvy