How to use exponent in Pascal?

Question

I have a problem to solve, where the PG formula uses exponent other than two (squared), and cannot use sqrt().

How can I resolve this in Pascal in an intuitive way? I know you can’t use it ** also.

Formula : an = a1 . q(n – 1) // q elevado à n -1

Answer 1

an = a1 * power(q, n – 1)

I put in the Github for future reference.

Documentation.

Answer 2

x to y is equal to Exp(y*ln(x))

Example:

Program Exemplo;
var
a, b : Integer;
begin
  a := 5;
  b := 3;
  writeln (exp(b*ln(a)):10:0);
  readln;
end.