1. ## Basic equation assistance...

Good morning!

I have never been good with math. So, of course I opt to seek a degree in computer programming!

So, I have a few equations that I am trying to figure out:

Compute the following expressions:
e1 = 1 + 2 + 3 + 4 + 5 + ... + 123
e2 = 1 + 3 + 5 + 7 + 9 + ... + 123
e3 = 1*2*3*4*5* ... *33
e4 = 1*1 + 2*2 + 3*3 + 4*4 + ... 100*100
e5 = 2 to the 18th power

How would you do these in Algebra? Thanks in advance.

DamienCurr

2. Originally Posted by DamienCurr
Good morning!

I have never been good with math. So, of course I opt to seek a degree in computer programming!

So, I have a few equations that I am trying to figure out:

Compute the following expressions:
e1 = 1 + 2 + 3 + 4 + 5 + ... + 123
e2 = 1 + 3 + 5 + 7 + 9 + ... + 123
e3 = 1*2*3*4*5* ... *33
e4 = 1*1 + 2*2 + 3*3 + 4*4 + ... 100*100
e5 = 2 to the 18th power

How would you do these in Algebra? Thanks in advance.

DamienCurr
By summation

$e_1=\sum_{i=1}^{123}i$

$e_2=\sum_{i=1}[2(i-1)+1]$

$e_3=33!$

$e_4=\sum_{i=1}^{100}i^2$

etc..