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visits member for 2 years, 3 months
seen 1 hour ago

Dec
21
asked How to select a list from a list?
Dec
17
asked How can I use the command `Minimize` of this trigonometric function?
Oct
5
asked How can I find the greatest of this expression?
Jul
16
asked Is this a bug in FunctionDomain (V.10)?
Jun
23
asked How can I get the exact real solution of this equation?
Apr
11
asked How can I select two lists from a list of lists so that I receive the system of equations has only rational solutions?
Mar
5
asked How to find the complex number has least and greatest modul satisfying a given condition?
Feb
11
asked How to substitute the following conditions into an expression?
Jan
15
asked Find all values of the paramaters $m$ for which the equation has four roots smaller 2
Jan
7
asked Reduce with Integer domain, but receive a rational solution
Dec
20
asked How can I find the sum of the even digits of a number of all elements of a list?
Dec
12
asked How to convert this answer into $\ln$ form?
Nov
15
asked How to select three points $A$, $B$, $C$ from the following list so that the circle passing $A$, $B$, $C$ has centre $(1,2,3)$?
Oct
13
answered Heron's formula for area of a triangle
Oct
10
asked How can I get the exact solution of this equation (inequality equation)?
Oct
3
asked How to get a list of pairs into the form $(x,y)$?
Sep
16
answered Is there a triangle like this?
Sep
14
asked Is there a triangle like this?
Sep
8
asked How to find the numbers $a$, $b$, $c$, $d$ of the function?
Jul
23
asked $1 - \sqrt{5}$ $\in$ $\mathbf{R}$?