Question

Find the ninth term of the sequence 1,-1/2,1/4,-1/8

Answer 1

Answer:

Given that

Tn=1 -1/2 1/4 -1/8

Step-by-step explanation:

a1=1 and a2=-1/2

Diffrence _ a2-a1

-1/2-1

D= -3/2

now we have solve the nineth term

T9= a+(9-1)d

1+8d

1+8*-3/2

1-24/2

LCM OF 1&2 = 2

NOW :-

2-24/2

-22/2

-11 ASWER