Find the first four terms of the sequence whose nth terms are given by
(i) an = n3 −2
Solution :
To find the 1st term, we have to apply n = 1
Hence the first four terms are -1, 6, 25, 62.
an = n3 −2
n = 1
a1 = 13 −2
= 1 - 2
a1 = -1
|
an = n3 −2
n = 2
a2 = 23 −2
= 8 - 2
a2 = 6
|
an = n3 −2
n = 3
a3 = 33 −2
= 27 - 2
a3 = 25
|
an = n3 −2
n = 4
a4 = 43 −2
= 64 - 2
a4 = 62
|
