Question

a2=13 a4= 3 find a2 and a3​

Answer 1

Answer:

Given,

:- a2 = 13

a+d = 13 ...... (1)

:- a4 = 3

a+3d = 3 ........ (2)

--> Now, subtract eq. 1 from 2

a+3d = 3

- a+d = 13

——————

2d = - 10

[ D = - 5 ]

And, put the value of D in eq. 1

--> a + (-5) = 3

a = 3+5

a = 8

...................................................

So, we get a=8 and d=-5

Then,

a3 = a+2d

= 8+(-5)

= 8-5

= 3