Paradox: Is $e^{i \frac{2\pi}{2} }$ equal to $1$ or $-1$?
3712
Why $\sqrt{-1 \cdot {-1}} \neq \sqrt{-1}^2$?
54435
What is the value of $1^i$?
152686
How to derive $E=mc^{2}$?
96805
Why is the Absolute Value of $3-π$ equal to $π - 3$
37642
Why is $\pi$ irrational if it is represented as $C/D$?
64941
Why is $1 - \frac{1}{1 - \frac{1}{1 - \ldots}}$ not real?
86247
$ \int\frac{g(x)}{f(x)} \, dx $ where $f(x) = \frac{1}{2}(e^x+e^{-x})$ and $g(x) = \frac{1}{2}(e^x - e^{-x})$?
80060
Is $\frac{1}{\infty}$  equal zero?
115506
What's wrong with this demonstration? (1 = -1)
95637
Justifying Calculations on $f(n)=\frac{1}{2 \pi}\int_{-\pi}^{\pi}\theta e^{-in \theta} d \theta$
40534
What is $(-1)^{\frac{2}{3}}$?
70974
How can zero divided by $i$ be $2\pi$?
120719
Why isn't it $E \approx 27.642 \times mc^2$?
41645
Checking my understanding: $1 - 1 + 1 - 1 + 1 - ... = \frac{1}{2}$
139411
Finding $\pi$ factorial
146530
If $z$ lies on the circle $|z-1|=1,$ then the value of $\frac{z-2}{z}$ is
86428
Can we show that the decimal expansion of $\pi$ doesn't occur in the decimal expansion of the Champernowne constant?