For the sequence an = ⌊√2n+ 1/2⌋, a7is ____________.
A. 1
B. 7
C. 5
D. 4
Answer:A
For the sequence an = ⌊√2n+ 1/2⌋, a7is ____________.
A. 1 B. 7 C. 5 D. 4
Explanation: a7 = ⌊√14+1/2⌋ which is ⌊4.24⌋ = 4.