Question

An = 5 +0.2(n - 1) Write the explicit formula in a function form

Answer 1

Answer: $f(n) =f(1)+0.2(n-1)$

Step-by-step explanation:

Given: $a_n=5+0.2(n-1)$

It is the formula of nth term $[a_n=a+(n-1)d]$ in Arithmetic progression

where 5 = First term

0.2 = common difference

To write first term , we use f(1).

nth term will be

$f(n) =f(1)+0.2(n-1)$

Hence, the function form : $f(n) =f(1)+0.2(n-1)$