Question 269764
As far as "evaluate the ... function" for the various values of x, just get out your calculator. If your calculator does not have a button for "e", then use
2.7182818284590451
of some rounded-off version of this number for e.<br>
The domain is the set of possible values for x. Since x is an exponent and since exponents can be any number, the domain of this function is all Real numbers.<br>
The range of a function is the set of possible values for y (or f(x)). Since the y is 2 times a power of e and since <b>all</b> powers of e are positive (Remember that {{{e^0 = 1}}} and that negative exponents mean reciprocals and reciprocals of positive numbers, like e, are also positive) and since 2 times a positive number is positive, the range of this function is all positive Real numbers.