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Today,
03:20 PM
Dr.Peterson
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Mariele, you haven't answered my questions along with fixing the pictures. Doing so might help us tell you what, if anything, is "wrong". We can't...
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6 replies | 127 view(s)
Today,
01:36 PM
Denis
replied to a thread
Thanks?
in
Math Odds & Ends
Looks like I missed your edit: "Last edited by mmm4444bot; Yesterday at 12:30 AM. Reason: cropped and rotated image" OKAY: thanks Mark, and to...
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2 replies | 50 view(s)
Today,
01:30 PM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Ohhh...r = 4, not 42 (the "2" stuck to the "4" when I quoted your ORIGINAL post!). Anyhow, same thing: / 2 = 4 So a = 2r / (sqrt(3)-1) I...
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6 replies | 127 view(s)
Today,
11:37 AM
Alfredo Dawlabany
started a thread
Set theory
in
Intermediate/Advanced Algebra
Show that A\cap B^{c} =A\cap C\Rightarrow A\subseteq B^{c}\cup C^{c} A, B, and C are subsets of S Can someone give me a hint ?
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0 replies | 17 view(s)
Today,
09:03 AM
Denis
replied to a thread
Cryptic clue (Dec.15)
in
Math Odds & Ends
That was a vIGOrous solve Mark!
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2 replies | 76 view(s)
Today,
08:21 AM
Alex_Of_Darkness
replied to a thread
Show that λ is an eigenvalue of the B matrix iff λ is an eigenvalue of B'
in
Calculus
Yeah I tested a few other 2x2 matrix and it seems to always give the same Eigenvalues when you use B and it's transposed matrix. So yeah I'm pretty...
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8 replies | 394 view(s)
Today,
05:15 AM
mmm4444bot
replied to a thread
Thanks?
in
Math Odds & Ends
You're welcome!! :-P As noted, by my comment in richiesmasher's first post, I had cropped and rotated the image, to remove everything which the OP...
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2 replies | 50 view(s)
Today,
05:00 AM
mmm4444bot
replied to a thread
Scale a Polynomial
in
Intermediate/Advanced Algebra
The graph of this function is a parabola that opens upward. Is there a typo? I think there are better models (i.e., those resulting in...
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1 replies | 49 view(s)
Today,
04:34 AM
mmm4444bot
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
We get better results by uploading three separate (cropped) images instead of combining three full pages into a single, very wide image. Most...
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6 replies | 127 view(s)
Today,
04:20 AM
mmm4444bot
replied to a thread
Cryptic clue (Dec.15)
in
Math Odds & Ends
My answer, proffered in alternate-clue form. :cool: Heraldic green tigon body is a real head-spinner (7)
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2 replies | 76 view(s)
Today,
01:59 AM
MrIfOnly
replied to a thread
Calling All Members! A moment of your time, please.
in
Administration Issues
Wow! I'm a member and a lurker of a few technical forums around the web and I have to say that your post should be a 'sticky' on all of them. ...
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14 replies | 4025 view(s)
Today,
01:41 AM
MrIfOnly
started a thread
Scale a Polynomial
in
Intermediate/Advanced Algebra
Hi folks! I'm writing a program that will graphically move a ball along a series of parabolas to simulate the ball bouncing. I'm using a nested...
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1 replies | 49 view(s)
Today,
12:45 AM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
radius of incircle of a right triangle = (sum of the 2 legs - hypotenuse) / 2 Yours is a special 30-60-90 right triangle. If short leg = a, then...
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6 replies | 127 view(s)
Today,
12:10 AM
Dr.Peterson
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
The picture has too little resolution; but what I can make out from it looks as if you probably have a valid idea. Can you either post a better...
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6 replies | 127 view(s)
Yesterday,
10:32 PM
tkhunny
replied to a thread
Need help conceptually with eigenvector solution
in
Intermediate/Advanced Algebra
Please show your characteristic equation and explain why you did not get \lambda = 0 as an Eigenvalue.
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1 replies | 39 view(s)
Yesterday,
10:26 PM
tkhunny
replied to a thread
Show that λ is an eigenvalue of the B matrix iff λ is an eigenvalue of B'
in
Calculus
You have answered my question for this single matrix. What does it mean for the Eigenvalues if you get EXACTLY the same Characteristic equation? ...
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8 replies | 394 view(s)
Yesterday,
08:34 PM
Denis
replied to a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Can't read/reach your attachments. Are you familiar with the 30-60-90 triangle?
see more
6 replies | 127 view(s)
Yesterday,
08:24 PM
frank789
started a thread
Need help conceptually with eigenvector solution
in
Intermediate/Advanced Algebra
hi all came across a problem in my homework set which gave 3 eigenvalues and when I worked them through for the eigenvectors I got only 2 unique...
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1 replies | 39 view(s)
Yesterday,
05:44 PM
Alex_Of_Darkness
replied to a thread
Show that λ is an eigenvalue of the B matrix iff λ is an eigenvalue of B'
in
Calculus
So I tried with the matrix B (first row 1,2 ; second row 3,4) so B' (first row 1,3 ; second row 2,4) and it gives me | λ I - B | = | λ I - B' | ...
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8 replies | 394 view(s)
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