Question

if first term of an ap is a common difference is d and last term is l then show that the sum of the series is
l^2-a^2/2d + 1/2(a+l)​

Answer 1

Answer:

can you say question in detail becoz i cant understand what are you trying to say

Answer 2

Step-by-step explanation:

s=n/2(a+l)

to get the answer you need to know that formula to find the sum of ap is s=n/2(a+l) , to find the required equation , you have to solve it