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x Σ times x ^? Please answer.

Guest Aug 2, 2014

Best Answer 

 #2
avatar+93683 
+5

Hi Dragon Slayer,

I see you have found a new method for making 'legitimate' posts.  I hope that you learn something from it. 

Anyway, I have learned something - I have never written this in LaTex before!

By the way, LaTex is pronounced LayTec

 

$$\\\sum \quad
\mbox{This is the Greek letter 'capital sigma' and it means 'sum of'}\\\\
\sum\limits_{n=1}^5\;(n^2-1)\\\\
=(1^2-1)+(2^2-1)+(3^2-1)+(4^2-1)+(5^2-1)\\\\
=1+3+8+15+24\\\\
=51\\\\
\mbox{You see how I have replaced the n with the numbers from 1 to 5 and added them all together?}$$

Oh sorry, I didn't even notice the original question.  This was a puzzle question.

I think that Aziz answered it a day or 2 ago.  I think it was Aziz, maybe it was Ninja but I don't think so. 

It was a really good answer too.  

Melody  Aug 2, 2014
 #1
avatar+8263 
0

What does Σ mean?

Can you please explain it to me please?

DragonSlayer554  Aug 2, 2014
 #2
avatar+93683 
+5
Best Answer

Hi Dragon Slayer,

I see you have found a new method for making 'legitimate' posts.  I hope that you learn something from it. 

Anyway, I have learned something - I have never written this in LaTex before!

By the way, LaTex is pronounced LayTec

 

$$\\\sum \quad
\mbox{This is the Greek letter 'capital sigma' and it means 'sum of'}\\\\
\sum\limits_{n=1}^5\;(n^2-1)\\\\
=(1^2-1)+(2^2-1)+(3^2-1)+(4^2-1)+(5^2-1)\\\\
=1+3+8+15+24\\\\
=51\\\\
\mbox{You see how I have replaced the n with the numbers from 1 to 5 and added them all together?}$$

Oh sorry, I didn't even notice the original question.  This was a puzzle question.

I think that Aziz answered it a day or 2 ago.  I think it was Aziz, maybe it was Ninja but I don't think so. 

It was a really good answer too.  

Melody  Aug 2, 2014

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