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NEGATIVE ROOT
A non-integer power is actually a root, and a root cannot be found for a negative number.

NEGATIVE ROOT
The root of a negative number cannot be found, it's not real.

RANGE
Logarithms exist for values greater than zero only.

RANGE
The functions 'arcsin' and 'arccos' exist for values between -1 and +1 only.

RANGE
Division by 0 is not possible.

NAN
Not A Number. Sorry.

FACTORIAL
The factorials of numbers greater than 449 are too big.

INF
Result is a huge, possibly infinite number.