Question

Find sum to the infinity of 1,3/2,5/4,7/8, 9/16,...​

Answer 1

Step-by-step explanation:

a= 1

d= 1/2

Sn=?

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

Sn = n/2[2×1+(n-1)1/2]

Sn = n/1[2+n/2-1/2]

Sn = n/2[3/2+n/2]

Sn = n/4[n+3]