Why is 1 over x/y equal to y/x?
118161
Proof of dividing fractional expressions
104158
$\frac 00=$ ? Why It is un answerable?
4278
Is $\frac{\vert x+y\vert}{1+\vert x+y\vert}\leq\frac{\vert x\vert}{1+\vert x\vert}+\frac{\vert y\vert}{1+\vert y\vert}$ true?
101394
Please explain the logic behind $d(xy) = y(dx) + x(dy)$
73253
Question About equal signs in Theorems
129394
understanding $\frac{\partial x}{\partial y}\frac{\partial y}{\partial z}\frac{\partial z}{\partial x}=-1$
1102
Way to determine if X and Y are both over 0
71604
Why is the determinant of the 0x0 matrix equal 1?
108704
Help with proof of $|x+y| \geq |x|-|y|$
113250
If $x+{1\over x} = r $ then what is $x^3+{1\over x^3}$?
153456
What is the random variable $Z$ by the notation $Z =X/Y$?
33543
is "y1 < x < y2" an inequality or inequalities?
149201
What does $\lim_{x\to4} \frac{1}{x-4}$ equal?
16264
Why does $x$ divided by zero not equal $x$?
157920
Can I define $y=y(x)$?
92619
Why is gender typically coded 0/1 rather than 1/2, for example?
15238
subtraction of Y values