Register
Help
Remember Me?
What's New?
Activity Stream
New Posts
New Events
Mark Forums Read
Forum
Math Lessons by Subject
Calculators/Solvers
Advanced Search
Home
Activity Stream
If this is your first visit, be sure to check out the
FAQ
by clicking the link above. You may have to
register
before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.
Activity Stream
Filter
Sort By
Time
Show
Recent
Recent
Popular
Popular
Anytime
Anytime
Last 7 Days
Last 7 Days
Last 30 Days
Last 30 Days
All
All
Photos
Photos
Forum
Forums
Filter by:
Forums
Clear All
New Activity (
)
Please reload this page to view the 200+ new activity items that have been created.
Older Activity
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...
see more
1 replies | 20 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...
see more
1 replies | 20 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...
see more
4 replies | 67 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)
see more
1 replies | 53 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. ...
see more
14 replies | 3992 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...
see more
1 replies | 20 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...
see more
4 replies | 67 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...
see more
4 replies | 67 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.
see more
1 replies | 26 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? ...
see more
7 replies | 347 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
4 replies | 67 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...
see more
1 replies | 26 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' | ...
see more
7 replies | 347 view(s)
Yesterday,
03:22 PM
Mariele
started a thread
Draw a right triangle with an acute angle and radius of incircle given
in
Geometry and Trig
Hello, I have the following problems: 1. Draw a right angled triangle of which an acute angle measures 60 degrees and the radius of the incircle...
see more
4 replies | 67 view(s)
Yesterday,
02:53 PM
lookagain
replied to a thread
A rectangular piece of copper is 6 inches longer than it is wide....
in
Beginning Algebra
Make that (w - 12)(w + 14) = 0
see more
6 replies | 213 view(s)
Yesterday,
02:41 PM
Denis
replied to a thread
Solving Equation W/ Fractions and Decimals: (100p-4000/100p)=.3
in
Beginning Algebra
Another way is criss-cross multiplication (my favorite). (100*p - 4000)/(100*p) = 0.3 / 1 1 * (100*p - 4000) = .3 * 100*p 100*p - 4000 = 30*p...
see more
5 replies | 106 view(s)
Yesterday,
12:56 PM
Subhotosh Khan
replied to a thread
Equation needed to calculate the trajectory needed to intercept another object.
in
Geometry and Trig
What are your thoughts? Please share your work with us ...even if you know it is wrong.
see more
1 replies | 34 view(s)
Yesterday,
12:49 PM
Subhotosh Khan
replied to a thread
Solving Equation W/ Fractions and Decimals: (100p-4000/100p)=.3
in
Beginning Algebra
You should have written it as: (100*p - 4000)/(100*p) = 0.3 There are multiple ways to proceed from here. My preferred next step would be - to...
see more
5 replies | 106 view(s)
Yesterday,
11:11 AM
Dr.Peterson
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
We did prove that! Did you miss the "if ... then" in my answer? The work we do in solving shows that IF (S,U) is a solution, THEN it must be (25,...
see more
10 replies | 252 view(s)
Yesterday,
10:44 AM
Denis
started a thread
Thanks?
in
Math Odds & Ends
Rich, many thanks for a clear readable attachment. Happens in about 1 out of 1000 cases here :rolleyes:
see more
1 replies | 20 view(s)
Yesterday,
10:38 AM
Denis
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
2 + 3 = 5 ; we all agree 3 + 2 = 5 ; PROVE IT :rolleyes:
see more
10 replies | 252 view(s)
Yesterday,
09:05 AM
barrick
replied to a thread
Similar Triangles
in
Geometry and Trig
Hi richiesmasher, I understand that 7.5cm is the length of XY. For part (ii), note that the triangles XQY and SQR are similar, and the same...
see more
1 replies | 62 view(s)
Yesterday,
08:18 AM
majorburn
started a thread
Equation needed to calculate the trajectory needed to intercept another object.
in
Geometry and Trig
Got a math question i need someone smarter than me to answer. I'm making a videogame, and need to have a monster jump to intercept the player. In...
see more
1 replies | 34 view(s)
Yesterday,
03:51 AM
navneet9431
replied to a thread
Why do equations with two distinct variables with 2 distinct linear equations work?
in
Intermediate/Advanced Algebra
So, Ok!This is what I understood from your explanation. First, we assume that equations =>S+U=90 and =>40S+25U=2625 are true, where S and U are its...
see more
10 replies | 252 view(s)
12-15-2017,
11:05 PM
richiesmasher
started a thread
Similar Triangles
in
Geometry and Trig
Hello, I have a question here which is giving me some problems. The question is in the picture below. I have already figured out number (i)...
see more
1 replies | 62 view(s)
12-15-2017,
10:19 PM
Dr.Peterson
replied to a thread
3 equations 3 variables: k_1e^{k_2^0}+k_3=0, k_1e^{k_2^(0.1)}+k_3=1...
in
Intermediate/Advanced Algebra
Using those numbers, I was able to find the book online, and I see why you mentioned finding the solution without using Mathematica: that's how they...
see more
12 replies | 242 view(s)
More Activity
No More Results
No Recent Activity