Why are the graphs are different for $\frac{(x-9)}{{\sqrt x}-3}$ and ${\sqrt x}+3$?
49368
Why does factoring eliminate a hole in the limit?
57050
$\frac{a^{3}+1}{b+1}+\frac{b^{3}+1}{a+1}$ an integer $\Rightarrow \frac{a^{3}+1}{b+1}$ and $\frac{b^{3}+1}{a+1}$ are integers.
39894
Graphing y=x^2 and y=x
87647
How to know if the graph is an interval graph?
41363
when is f@g not the same as f[g]?
126484
Why is $\Gamma\left(\frac{1}{2}\right)=\sqrt{\pi}$?
1522
Is $\sqrt{64}$ considered $8$? or is it $8,-8$?
84654
The graph of xy = 1 is connected or not
7062
Can the complete graph $K_9$, be 2-coloured with no blue $K_4$ or red triangles?
80670
'Lines' in the Euler phi graph
127830
proof that $\sqrt(2)$ is irrational / why is the fraction irreducible
68838
Why $\sqrt[3]{3}\not\in \mathbb{Q}(\sqrt[3]{2})$?
40067
Integrating $\int\frac{x^3}{\sqrt{9-x^2}}dx$ via trig substitution
143236
$ S_{n}=\frac{x}{x+1}+\frac{x^2}{(x+1)(x^2+1)}+...........+\frac{x^{2^{n}}}{(x+1)(x^2+1)...(x^{2^{n}}+1)}$
150417
Two apparently different antiderivatives of $\frac{1}{2 x}$
67605
Different proof that $\sqrt{2}$ is irrational
110955
Find the coefficient of $x^9$ in $(1+x)(1+x^2)(1+x^3)\cdots(1+x^{100})$