Please help me calculate the following:
16^(-1/2)
(27)^(1/3) - with questions that have two brackets, only the first number has brackets on paper.
(27)^(-1/3)
(-27)^(1/3)
(-27)^(-1/3)
(-2)^(-3)
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Please help me calculate the following:
16^(-1/2)
(27)^(1/3) - with questions that have two brackets, only the first number has brackets on paper.
(27)^(-1/3)
(-27)^(1/3)
(-27)^(-1/3)
(-2)^(-3)
Quote:
Originally Posted by princess_anna57
I got the first three, but I'm not sure about the last ones. What difference does it make if x is a negative? does it mean that it's undefined/does not exist?
Well, if you try to take the square root (or any even root) of a negative number, you will not get a real answer (because the square of any real number is nonnegative). However, you can take cube roots of a negative number, and in fact you can take theQuote:
Originally Posted by princess_anna57
root of a negative number as long as
is odd.
Thus,, for example, because
.