Question

write the formula for the sum to first n terms of an ap​

Answer 1

Answer:

Sn=n/2(2a+(n-1)d)

Step-by-step explanation:

Check above!

That’s the formula for Sn for an AP!

a=first term.

n=number of terms

d=common diff.

——————-

Thanks!

Answer 2

Step-by-step explanation:

HELLO MATE

IN AN AP OF N TERMS

Sn= n/2(2a+(n-1)d)

HOPE IT HELPS