[Solved] How the formula of a Arithmetic Progression works? [closed]

Question

This:

sum=(limit*(2*1+(limit-1)*1))/ 2;

actually is the same as this formula:

where Sn denotes the sum of n terms, n is the number of terms(limit) and a1 is the first term of the AP and d is the common difference. All this information is found in the Wikipedia page for arithmetic progressions.

Accepted Answer

This:

sum=(limit*(2*1+(limit-1)*1))/ 2;

actually is the same as this formula:

where Sn denotes the sum of n terms, n is the number of terms(limit) and a1 is the first term of the AP and d is the common difference. All this information is found in the Wikipedia page for arithmetic progressions.