Please post any and all homework or other textbookstyle problems in one of the Homework & Coursework Questions...

Feb2313 09:23 AM
micromass

1 
33,166 
I've seen this problem explained in the movie 21, as well as the show Numbers. I'll use the example given in 21.
...

Jul1609 12:36 PM
HallsofIvy

8 
19,356 
parallelogram properties
1.>Each diagonal divides it into two congruent triangles.
2.>Diagonals need not bisect...

Apr1706 12:17 PM
arildno

4 
19,323 
How do you add or subtract in polar coordinates if not given the rectangular coordinates? Thanks.

Sep704 08:38 PM
coregis

3 
19,249 
How can you represent the largest # that is less than 1?

Apr2711 09:47 AM
Hurkyl

97 
19,241 
What is the difference between these terms?
In what context do they apply to?
How important is it that we treat them...

Jul605 11:50 AM
mathwonk

4 
19,239 
This sounds like first grade mathematics but I need to know the reasoning.
Why is it that to find a fraction of a...

Sep2206 04:20 PM
mtanti

79 
19,100 
Hello, do anyone know a website where we can download for free 'equation editor' or any program to write math...

Apr1707 08:00 AM
uart

25 
19,028 
have not seen this anywhere I've looked, anyone know?

Jun705 08:04 PM
vsage

1 
18,968 
\sum_{i=1}^{n} i is the sum of all numbers between 1 and n.
I'm trying to find one for odd numbers where you need...

Feb2912 12:54 PM
dodo

8 
18,936 
How does one do this, for example x= e^(3t)u(t4); how do you get x' ??

May603 09:38 AM
ahrkron

6 
18,930 
I know why it would equal to 0 if it was (0*0). But what about an actual number? Why does (100*0) equal to 0? You're...

Apr2012 08:33 PM
netslider

35 
18,855 
This sequence cropped up in an IQ test.
I can't for the life of me work out the next term, any ideas?
3, 8, 18,...

Jul2210 05:12 AM
Dickfore

73 
18,786 
Can anyone tell me how can I calculate the angle between two lines in 3D. I need in my codings.
I know it has a...

Jul606 01:55 PM
somy

3 
18,756 
How do you know when to use ≡ or =? I've seen the the formula for density written with that = and ≡.
Also, whilst...

Apr912 08:39 PM
Mark44

21 
18,513 
hey, i was just wondering if anyone could help find the sum of the infinite series defined by 1/. I can split it into...

Nov209 03:10 PM
TRUSKY1965

14 
18,506 
Hi everyone
Could you give me a way to calculate the period of every trigonometric functions?
thanks

Apr809 02:42 PM
AUMathTutor

4 
18,308 
HII Friends
Iam little bit new to matlab and iam trying to use ode45 and wrote code as
function dy =...

Apr2407 04:03 PM
AiRAVATA

2 
18,260 
I am a student who just finished high school and i am gonna go to college this fall. I got like 7 months to shape up...

Mar306 09:16 AM
Jeff Ford

22 
18,161 
edited..thanks for your help

Jan710 04:46 AM
davitz38

6 
18,154 
what is that latex font that screams "professional looking"?
I am using mathtype + power point's beamertemplate...

Oct2010 03:42 PM
Liji.h

6 
18,055 
How do i know under which circumstances to use synthetic and when to just do regular polynomial division? do they not...

Jun1808 07:19 AM
jerckomilicic

6 
17,977 
Some rule says that not all bounded sequence must be convergent sequence , one example is the sequence with general...

Jan1706 10:56 AM
HallsofIvy

7 
17,961 
Can you get logarithms of imaginary numbers?
The reason I was wondering is because integrating 1/(1+x^2) WRT x.
I...

Apr2813 06:43 PM
thelema418

11 
17,826 
This year I'm a freshman at university  physics  and we are just starting with mathematical analysis. I don't find...

Oct905 11:55 AM
robert Ihnot

7 
17,754 
Hi All,
I went to this website where someone wants to know how to calculate the area of some intersecting circles...

Aug2704 09:40 PM
Jdo300

4 
17,735 
Hey guys, I was doing some questions from spivak when i noticed this integral he set up. To prove that the integral is...

Aug811 03:33 AM
dimension10

23 
17,734 
Hi!
In a geometric progression you can find the sum to infinety is some series, for example 4,2,1,... where the...

Sep704 06:48 AM
HallsofIvy

3 
17,644 
The other day I was playing with my calculator and noticed that
\sqrt{2+\sqrt{2+\sqrt{2+\sqrt{2+...}}}} \approx 2
...

Sep809 12:30 AM
Elucidus

6 
17,584 
I understand that the limit as x > a for a polynomial function, f(x), is equal to f(a) because the function is always...

Sep2905 10:49 AM
HallsofIvy

7 
17,485 
I was bored the other day and wondered whether or not it would be possible to find out the natural log of the...

Feb111 05:06 PM
HallsofIvy

20 
17,471 
the regular ellipse formula in 2D is x^2/a^2 + y^2/b^2 = 1. but how can it be transformed into a 3D formula including...

Sep1008 09:32 PM
symbolipoint

10 
17,345 
Can someone let me know how to compute the standard deviation on the TI83.:smile:
Thanks,
Home Decoration

Apr2906 02:10 AM
Klarinettus

1 
17,336 
Sloth's Army is made up of three corps. Each of those corps is made up of two divisions. Each division is made up of...

Nov1404 10:47 PM
evagriselda

20 
17,279 
This may be an elementary question, but I've been thinking about it a little bit and wondering what other people...

Jan2013 07:43 PM
Vorde

41 
17,235 
Well, I have a small problem. I know the general formula for the volume of an ellipsoid. But I have a task to find it...

Apr3006 05:09 AM
=nobody=

5 
17,220 
I'm looking for a method to rotate a 3D vector, and place it at an arbitary 3D point (x,y,z) without changing the...

Jul2106 03:05 AM
kevdoig

4 
17,202 
I tried some formulas on my graph calculator after reading about root mean square calculations of power and physics....

Dec1704 10:27 PM
Chrono

3 
17,127 
(x+y)^4=x^4+y^4
We know this is true if x and/or y = 0, but what other possibilities are there?
I solved for...

Nov2204 04:58 PM
JasonRox

4 
17,111 
1. I am in intermediate Algebra and would like to take one more course to get prepared for Calculus 1. I am currently...

Mar1210 09:10 AM
Angry Citizen

2 
16,995 
Why is it that many mathematicians in the past who have made significantly profound contributions to the world of...

Nov511 05:32 PM
SteveL27

50 
16,985 