How do I find $X$? Is it possible?
123539
Numerical phenomenon. Who can explain?
71075
Find a general control and then show that this could have been achieved at x2
113045
How do I find the inverse of $f(x) = \frac{x}{x^2 + 1}$
24307
Is $x^x=y$ solvable for $x$?
73073
Differentiating $y=x^{2}$
60774
Find the value of : $\cos x \cos 2x...\cos 999x$ given that $x=\frac {2\pi}{1999}$
139215
Find the value of $\lim_{x \to - \infty} \left( \sqrt{x^2 + 2x} - \sqrt{x^2 - 2x} \right)$
122686
Find the root of the polynomial?
31122
How could I find $x$ in this equation $x^2-x+6 \equiv 0 \pmod {9}$
86518
Does $X$ have a lower bound?
85425
Is there any simple method to calculate $\sqrt x$ without using logarithm
106013
Given $f(x) = x + |x|$ for what values of $x$ is $f$ differentiable
2519
Finding double root. An easier way?
131897
Please check my simplification for x?
100995
For what $x$ : $2\sqrt{x}+\dfrac{1}{\sqrt{x+1}} \leq 2\sqrt{x+1}$
106934
$x^x=y$. How to solve for $x$?
142682
Find $f(x)$ where $ f(x)+f\left(\frac{1-x}x\right)=x$