179 reputation
4
bio website
location Israel
age
visits member for 3 years
seen Feb 2 '13 at 0:20

Sep
20
revised Transforming triangular coordinate system from angle to another
added 17 characters in body
Sep
20
asked Transforming triangular coordinate system from angle to another
Sep
2
comment Creating a special vector from two vectors
Thats working great, thanks.
Sep
2
accepted Creating a special vector from two vectors
Sep
2
comment Creating a special vector from two vectors
@J. M. added an image.
Sep
2
revised Creating a special vector from two vectors
added 150 characters in body
Sep
2
comment Creating a special vector from two vectors
@J. M. its not perpendicular to them. the vector that connects the two endpoints $\vec {BD}$ is perpendicular to $\vec {AB}$ and same for the other vector.
Sep
2
asked Creating a special vector from two vectors
Aug
31
awarded  Editor
Aug
31
comment Calculating the area of a special hexagon
@Glen Wheeler: you are right, I forgot a constraint, see the edit.
Aug
31
comment Calculating the area of a special hexagon
@Mark Bennet: you are right, I forgot a constraint, see the edit.
Aug
31
revised Calculating the area of a special hexagon
added 139 characters in body
Aug
31
asked Calculating the area of a special hexagon
Jun
13
accepted dot product negative angle
Jun
13
comment dot product negative angle
yes, I've been able it to that. didn't know cross product is such an easy operation.
Jun
13
comment dot product negative angle
Isn't there an easier way?
Jun
13
asked dot product negative angle
Apr
14
accepted Finding the first term of a geometric series by the sum and $n$
Apr
14
awarded  Student
Apr
14
comment Finding the first term of a geometric series by the sum and $n$
actually by the link Raskolnikov gave its $S = a \cdot \frac{r^{n+1}-1}{r-1}$ because my series terminates in $n$ not $n-1$