243 reputation
19
bio website
location Sevastopol, Russia
age 28
visits member for 2 years, 4 months
seen Aug 13 at 19:10

Aug
12
comment How to find a basis of an image of a linear transformation?
@BenWest thanks to you and André Nicolas, now it seems clear to me.
Aug
12
comment How to find a basis of an image of a linear transformation?
could you please provide an example?
Jul
30
comment reduction of $6xy + 8 y^2 -12x-26y + 11 = 0$ to canonical one of a second-order curve
thank you, but the main confusing thing was why I was not able to get the correct coordinates of transformed system's origin.
Jul
29
comment reduction of $6xy + 8 y^2 -12x-26y + 11 = 0$ to canonical one of a second-order curve
sorry, but I missed the point. Could you please detail how can I get the right answer (that the given equation is an equation of a hyperbola, which is rotated and shifted to the point (-1,2))?
Jul
29
comment reduction of $6xy + 8 y^2 -12x-26y + 11 = 0$ to canonical one of a second-order curve
thank you, I did not know about this way. I'll try it asap.
Jul
27
comment Could anybody provide a more detailed explanation of a tangent equation in its general form?
thank you, it just did not come to my mind that ' symbol has a meaning of a derivative. And in the textbook this word was not mentioned
Jul
27
comment how to prove $ax + by = cx + dy \implies a = c, b = d$?
how you can be sure that if $x \neq 0, y \neq 0 \implies a - c = b - d$ ? Could you please detail this?
Jul
27
comment how to prove $ax + by = cx + dy \implies a = c, b = d$?
and what if both x and y are 1?
Jul
27
comment how to prove $ax + by = cx + dy \implies a = c, b = d$?
I think they are both supposed to be 1, cause I saw this in the proving of coordinate transformation formula. x and y are the orts of the x and y axes.
Jul
26
comment How to find an equation of a plane perpendicular to two other planes and passing through a point
possible duplicate of Find a plane that passes through a point and is perpendicular to 2 planes
Jul
26
comment Plane parallel to two lines and goes through a point?
please, accept the answer
Jul
26
comment Determining the equation of a plane that contains one point and one line.
@ZolTunKul so did you checked this? Two months have passed.
Jul
25
comment Software for plotting functions… Any suggestions?
it seems as Oracle. Here id a screenshot saveimg.ru/show-image.php?id=c49cb5f2ae39b4026a383a64d4c2b56b
Jul
25
comment Software for plotting functions… Any suggestions?
actually it can proceed from this dialog window, but the app freezes after a couple of seconds anyway
Jul
25
comment Software for plotting functions… Any suggestions?
it does not work on windows either. The same thing. The program opens then I see the dialog box, as on the screenshots, and the program freezes.
Jul
25
comment Software for plotting functions… Any suggestions?
yes, sorry, here they are saveimg.ru/show-image.php?id=64e3b9571e7cbd88027402f8d6d7d4d5 and saveimg.ru/show-image.php?id=2c7ac6d079e4e36c489324b5b14f77dd
Jul
25
comment Software for plotting functions… Any suggestions?
no, the first window I see when open the program is saveimg.ru/pictures/25-07-14/… after pressing ok I see this saveimg.ru/pictures/25-07-14/… and at that moment the program becomes unresponsive.
Jul
24
comment Software for plotting functions… Any suggestions?
it does not. When I run it the window opens and another one too with the text like 'update' or something similar. And I cannot close this window, the program becomes unresponsible at all.
Jul
24
comment Software for plotting functions… Any suggestions?
it seems promising, but does not work on Ubuntu
May
8
comment Can somebody provide an explanation to the formula of a one elementary integral?
@Artem, thank you very much!