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15
Math.TechQA.Club
2026-03-30 14:59:27
1.3k
Views
If $P$ is the intersection of the altitudes of a tetrahedron $ABCD$ and $r$ is the circumradius, then $PA^2+PB^2+PC^2+PD^2=4r^2$
Published on
30 Mar 2026 - 14:59
#geometry
#3d
#coordinate-systems
#solid-geometry
7.6k
Views
Finding a coordinate vector for specific basis
Published on
10 Mar 2013 - 18:14
#vector-spaces
#coordinate-systems
5.3k
Views
Test of handedness
Published on
30 Mar 2026 - 3:19
#linear-algebra
#vector-spaces
#coordinate-systems
#cross-product
901
Views
A Question About Linear Interpolation
Published on
03 Apr 2026 - 7:32
#geometry
#algebra-precalculus
#coordinate-systems
#interpolation
142
Views
question on transformation
Published on
13 Mar 2013 - 6:41
#algebra-precalculus
#transformation
#coordinate-systems
2.2k
Views
get position of point given distance from other points?
Published on
13 Mar 2013 - 15:04
#geometry
#coordinate-systems
249
Views
Transformation of a matrix, change of basis
Published on
13 Mar 2013 - 18:55
#linear-algebra
#transformation
#coordinate-systems
207
Views
Change of coordinate matrices
Published on
14 Mar 2013 - 6:12
#linear-algebra
#transformation
#coordinate-systems
176
Views
Find at least two ways to find $a, b$ and $c$ in the parabola equation
Published on
14 Mar 2013 - 15:22
#algebra-precalculus
#conic-sections
#coordinate-systems
7.3k
Views
Angle between two coordinates(latitude, longitude) from a position on earth
Published on
15 Mar 2013 - 2:08
#linear-algebra
#coordinate-systems
352
Views
triple integral - ecliptic coordinate
Published on
15 Mar 2013 - 12:49
#integration
#coordinate-systems
#polar-coordinates
16.7k
Views
How to apply transformations to line equation?
Published on
08 Apr 2026 - 4:28
#coordinate-systems
68
Views
Linear 2D transform in the sense of geometric figures?
Published on
20 Mar 2013 - 15:20
#matrices
#transformation
#coordinate-systems
1.6k
Views
Two questions for coordinate geometry
Published on
07 Apr 2026 - 20:34
#coordinate-systems
3.1k
Views
Quick question regarding coordinate geometry
Published on
22 Mar 2013 - 23:43
#coordinate-systems
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