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brinlin
Username
brinlin
Score
68
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Questions
16
Answers
2
16 Questions
2 Answers
0
331
0
+68
Help pls
Let P (1, 2, 3), Q (2, 3, 1), and R (3, 1, 2).
(a) Derive the parametric equations for the line that passes through P and Q without resorting
to the known formula.
(b) Derive the equation of the plane that passes through the points P, Q, and R
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brinlin
Aug 13, 2021
0
300
0
+68
Help pls
Find a vector that is perpendicular to the plane passing through the points P (1, 2, 3), Q (2, 3, 1), and R (3, 1, 2).
brinlin
Aug 13, 2021
0
402
1
+68
help pls
Find the angle between the vectors and .
●
brinlin
Aug 13, 2021
0
309
0
+68
Help pls
Question:
brinlin
Aug 10, 2021
0
312
0
+68
help pls
The centroid of the faces of a tetrahedron are (17, 0, 3), (-2, 13, 3), (1, 2, 15) and (1, -1, 2). What are its vertices?
brinlin
Aug 10, 2021
0
320
0
+68
help pls
Show that for any point P and any triangle ABC, the sum of the squares of the sides of the triangle is no greater than 3 times the sum of the squares of the distance from P to each of the vertices of triangle ABC. At what point do we have equality?
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brinlin
Aug 10, 2021
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#2
+68
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How did you get your answer? I don't understand.
brinlin
Jul 17, 2021
#2
+68
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Sorry, haven't learned this formula.
brinlin
Jul 17, 2021
