perl function exp

The exp function in Perl is used to calculate the exponential value of a number. Here is an example:

my $num = 2;
my $exp_val = exp($num);
print "The exponential value of $num is $exp_val\n";

In this example, the variable $num is set to the value 2. The exp function is then called with $num as the argument, and the result is stored in the variable $exp_val. Finally, the program prints "The exponential value of 2 is 7.38905609893065" to the console.

The exp function calculates the exponential value of a number, which is e (the mathematical constant) raised to the power of the given number. For example, exp(2) is e^2, which is approximately 7.389. The value of e is approximately 2.71828.

Here is another example:

my $num = -3;
my $exp_val = exp($num);
print "The exponential value of $num is $exp_val\n";

In this example, the variable $num is set to the value -3. The exp function is then called with $num as the argument, and the result is stored in the variable $exp_val. Finally, the program prints "The exponential value of -3 is 0.0497870683678639" to the console.

The exp function can be useful in mathematical calculations, particularly when dealing with growth or decay rates. For example, in finance, the exponential function can be used to calculate the future value of an investment with compound interest.