Why is the range of radical functions all non-negative real numbers?
81381
Why does the domain and range of $\sqrt x$ contain only positive real numbers?
24413
Why is $\mathbb{Z}[\sqrt{-n}], n\ge 3$ not a UFD?
17991
Nonconstant polynomials do not generate maximal ideals in $\mathbb Z[x]$
73593
Why is the range of inverse trigonometric functions defined in this way?
155635
Why is the math for negative exponents so?
157733
Are positive real numbers $x,y$ allowed to be taken out during this proof?
42251
Limit of non-negative real root of $x^n+x^{n-1}+x-1=0$ as $n \to \infty$
73248
Prove that $\mathbb{R^*}$, the set of all real numbers except $0$, is not a cyclic group
157266
Can a nonzero polynomial evaluate to the zero function in a suitable infinite ring of char 0?
154507
If all the roots of a polynomial P(z) have negative real parts, prove that all the roots of P'(z) also have negative real parts
42842
Proof for $\epsilon$ closeness to $\sqrt{2}$ for all values of $\epsilon$
31327
Why is $\sqrt{x}$ a function?
73585
Why is the function continuous, if it is defined only on integers?
4140
Fermat's Last Theorem with negative exponent
133286
Conjugates of radicals
111569
Property of a polynomial with no positive real roots
81875
why is $\sqrt{-1} = i$ and not $\pm i$?