Question

Find the sum of fist 30 terms of an ap whose nth term is w+1/2n​

Answer 1

Answer:

2 * 15 = 30.

w+1 = 29+1

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Answer 2

Answer:

hey hope its useful

Step-by-step explanation:

Sum of first 30 terms of an ap whose nth term is 2 + (1/2)n is given as below :

1. Tn = 2 + (1/2)n

2. Sn = summation of ( Tn )

3. We've to find sum of first 30 terms so,

4. S30 = summation of ( Tn ) from n=1 to n=30

= summation of { 2 + (1/2)n } from n=1 to n=30

= { summation of (2) + summation of (1/2)n } from n=1 to n=30

= 2×30 + 1/2×(30× 31)/2

= 60 + 232.5

= 292.5