Why don't we define $\frac00$ (or other undefined expressions) the same way we define $\sqrt{-1}$?
19655
Why don't we define "imaginary" numbers for every "impossibility"?
31096
Why does division result in zero instead of a decimal?
119815
Why is $\tan((1/2)\pi)$ undefined?
129394
understanding $\frac{\partial x}{\partial y}\frac{\partial y}{\partial z}\frac{\partial z}{\partial x}=-1$
17963
I have learned that 1/0 is infinity, why isn't it minus infinity?
13363
Why does an argument similiar to 0.999...=1 show 999...=-1?
67837
Evaluation of $\int_{0}^{1}\frac{x\ln (x)}{\sqrt{1-x^2}}dx$
95350
Why does 1 // 0.1 == 9.0?
102138
Why does $\sqrt{x^2}$ seem to equal $x$ and not $|x|$ when you multiply the exponents?
53958
General misconception about $\sqrt x$
126484
Why is $\Gamma\left(\frac{1}{2}\right)=\sqrt{\pi}$?
23128
Why aren't logarithms defined for negative $x$?
36647
Why does printf("%f",0); give undefined behavior?
101512
Is there an numeric arithmetic with a single operator?
36664
How is the square root function implemented?
7533
Why do floating-point numbers have signed zeros?
108923
What is wrong with this false proof? $-1=(-1)^1=(-1)^\frac{2}{2}=((-1)^2)^\frac{1}{2}=\sqrt{(-1)^2}=\sqrt{1}=1$