Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
brinlin
Username
brinlin
Score
68
Membership
Stats
Questions
16
Answers
2
16 Questions
2 Answers
0
400
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
read more ..
brinlin
Aug 13, 2021
0
363
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
469
1
+68
help pls
Find the angle between the vectors and .
●
brinlin
Aug 13, 2021
0
377
0
+68
Help pls
Question:
brinlin
Aug 10, 2021
0
377
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
379
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?
read more ..
brinlin
Aug 10, 2021
0
423
0
+68
Help
Convert the rectangular coordinates to polar coordinates and spherical coordinates.
brinlin
Jul 24, 2021
0
422
0
+68
Help please
Question:
brinlin
Jul 23, 2021
0
499
1
+68
Help please
Question:
●
brinlin
Jul 23, 2021
0
428
1
+68
Help please
Let be a sixth root of unity. Find all possible values of .
●
brinlin
Jul 18, 2021
0
371
0
+68
Help asap please
(a) Let a be a cube root of unity, and let b be a fifth root of unity. Prove that ab is a root of unity.
(b) Let a be a primitive cube root of unity, and b be a primitive fifth root of unity. Prove that ab is a primitive root of unity.
read more ..
brinlin
Jul 18, 2021
0
419
0
+68
Help please
Reproduce the angle difference identities for sine and cosine by expressing in rectangular form.
brinlin
Jul 17, 2021
0
472
2
+68
Having some trouble with this
Show that if w is a primitive root of unity for n = 2m, then is a primitive root of unity.
●
●
brinlin
Jul 17, 2021
0
480
2
+68
Need some help with this
Let w be a sixth root of unity. Find all possible values of .
●
●
brinlin
Jul 17, 2021
0
506
2
+68
Help Please
Reproduce the angle difference identities for sine and cosine by expressing in rectangular form.
●
●
brinlin
Jul 16, 2021
0
489
2
+68
Help Please
Prove that
●
●
brinlin
Jul 16, 2021
«
latest
0
-1
2
latest
»
#2
+68
0
How did you get your answer? I don't understand.
brinlin
Jul 17, 2021
#2
+68
0
Sorry, haven't learned this formula.
brinlin
Jul 17, 2021
