Question

write down in terms of n, an expression for the nth term of the following sequences: a)4 1 -2 -5 -8 b) -7 -12 -17 -22 -27​

Answer 1

Hi,

Explanation:

a) the sequence is a AP with first term =4 and common differnce =-3

`a_n=4+(-3)*(n-1)\\\\\boxed{a_n=7-3*n}\\`

b) the sequence is a AP with first term =-7 and common differnce =-5

`a_n=-7+(-5)*(n-1)\\\\\boxed{a_n=-2-5*n }\\`