Question

. A sequence an is defined by an = 5 – 2n. Prove that it is an AP.

Answer 1

Answer:

Please check the attachment

Please Mark it Brainlist

FOLLOW ME

THANK YOU

Answer 2

Step-by-step explanation:

an=5-2n

Let..a1=1

a2=2

a3=3

Substitute it...

a1=5-2(1)

= 3...... (1)

a2=5-2(2)

=1.............(2)

a3=5-2(3)

= - 1......(3)

Series =3,1,-1

From this we get common diffidence is - 2

Hence it is in AP