Numbers: Integers, Rationals, Decimals

1. You can also raise 2 to large powers:
> 2^32;

                              4294967296

2. You can raise rational numbers to large powers:
> (2/5)^32;

                             4294967296
                       -----------------------
                       23283064365386962890625

3. A different result occurs if you use another representation of two-fifths:
> (0.4)^32;

                                        -12
                          .1844674407 10

How many digits are displayed?
This answer is similar to what you would expect from a calculator
and is the best 10-digit approximation to the exact answer.

4. You can force the exact rational answer to be approximated by
a decimal using in Maple evalf command:
> evalf((2/5)^32);

                                        -12
                          .1844674407 10

Take careful note of the parentheses.

5. You can specify the number of digits that will be displayed
in decimal representation of numbers:
> Digits := 20;

                             Digits := 20

> evalf(2^100);

                                              31
                      .12676506002282294015 10

> evalf(2^100,30);

                                                   31
                 .126765060022822940149670320538 10

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