Question

a1=5, a4=9×1/2 find a2, a3 ​

Answer 1

Answer:

a1=5

a=5

a4=9/2

a4=a+3d

9/2=5+3d

9/2–5=3d

(9-10)/2=3d

-1/2=3d

d=-1/6

a2=a+d=5+-1/6=(30-1)/6=29/6

a3=a+2d=5+2(-1/6)=5+(-1/3)=(15-1)/3=14/3