Question

Find the 7th term of the sequence whose nth term is given by an=(-1)^n-1.n^3

Answer 1

Answer:

Step-by-step explanation:

Given that - an=(-1)^n-1.n^3

a7=(-1)^7-1.7^3

a7=-1-343

a7=-344

Answer 2

Answer:

7th Term = 343

Step-by-step explanation:

an = (-1)^n-1 x n^3

a7 = (-1)^7-1  x 7^3

    = (-1)^6 x 343

    =  1 x 343

    = 343

  -> Therefore, 7th term is 343