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The easiest way to do this is with a calculator. Anyway, the definitions are as follows.
x to the power 1/2 is the square root of x, x to the power 1/3 is the cubic root of x, and in general, x to the power 1/n is the nth. root of x.
If you also have a number other than one in the numerator:
For example, to calculate x to the power 3/5 you first raise x to the power 3, then take the fifth root of the result. You can also do it the other way: first calculate the fifth root, then raise to the third power. In general, to calculate x to the power m/n, you take the nth root, then raise the result to the power m.
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What is the frational notation of 5.75 percent?
23/400
What is the frational equivalent of 0.111?
As a fraction 0.111 = 111/1000
What power does number 128 have?
128 = 27. You can find out this sort of things quickly if you take the trouble to divide the number into prime factors.
Why can't you take the log of a negative number?
the log of a number, X, is equal to some value , N, and by definition 10 to the N power =X 10 to any power is always positive
Log -3 equals?
There is no answer - it is an error: negative numbers do not have logarithms. The log if a number tells to what power the (positive) base must be raised to get the number. Raising any positive number to any power will never result in a negative number, so it is an error to try and take the log of a negative number.
