+0  
 
0
167
2
avatar+683 

for example: 

\(f(n)=f(n-1)+5 \) 

or does it not matter if you write it as x 

 Sep 20, 2019
 #1
avatar+6179 
+2

The letters i through n are generally used for integer variables/indices

 

All other letters generally refer to continuous variables.

 

This is definitely not a hard and fast rule but you'll find your math writing much easier to understand if you abide by it.

 Sep 20, 2019
 #2
avatar+683 
+1

thank you so much Rom! 

Nirvana  Sep 20, 2019

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