Question

what is the first negative term of an ap 17 14 and 11 ...​

Answer 1

Step-by-step explanation:

use tn =a+(n-1)d

if the sequence is in ap then

d=a1-a2

d=14-17

d=-3

Answer 2

a= 17

d=-3

first negative term <0

a+(n-1) d <0

17-3n +3<0

20 -3n < 0

n< -20 /-3

n<6.66

therefore n=6

first negative term = a+ 6d

=17 - 18

=-1

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