Question

In ap first term is 3 and an= 4an-1+3, n>1 then find 4th term

Answer 1

$\huge\boxed{\fcolorbox{white}{pink}{Answer}}$

A = 3

$\Large\boxed{Given:-an=4an-1+3}$

for the 4th term we put..

$\Large\boxed{n=4}$

A4 = 4 × 4 -1 + 3

A4 = 16 + 2

$\Large\boxed{A4=18}$

I hope this helps u...☺️