Question

in a sequence if an=n² +4 then find a³​

Answer 1

QUESTION:-

In a sequence if  $a_n=n^2+4$ then find $a^3$

ANSWER:-

Data:-

In an AP,

$a_n=n^2+4$

To Find:-

3rd term of an AP  { $a^3$ }

Proof:-

$a_n = n^2+4$

Substituting {n=3} in the given equation

We get,

$a_3= 3^2+4$

    $= 9+4$

    $=13$

∴ $a_3 =13$

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