Question

if sn = n2 find an ?​

Answer 1

Answer:

Step-by-step explanation:

$sn= n^2$

But s1= a1= a= 1^2= 1

a2= s2-s1= 2^2- 1= 3= a+ (2-1)d= a+ d

d= a2- a1= 3-1= 2

a10= a+ 9d= 1+ 18= 19

Answer 2

Answer:

19 answer

Step-by-step explanation:

19 answeris the sum