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

Feb2313 09:23 AM
micromass

1 
38,988 
is it
Al = Ao(1/2)^(t/h)
or
Al = Ao(1/2)^(h/t)
?
where Ao =original amount
Al = amount left

Apr1105 08:36 PM
dextercioby

1 
20,311 
Hi! Can anyone explain to me what this sign means. \equiv

Dec904 11:04 AM
dextercioby

15 
20,275 
How can you represent the largest # that is less than 1?

Apr2711 09:47 AM
Hurkyl

97 
20,198 
have not seen this anywhere I've looked, anyone know?

Jun705 08:04 PM
vsage

1 
20,198 
Im just wandering what is the longest equation in mathematics?

Jun2203 10:49 AM
einsteinian77

17 
20,182 
Good time people
Is there any way other than dividing the number from 2 to its half to find all of its divisors?...

Feb1109 02:14 PM
Shyan

9 
20,072 
I was looking around a little bit for an algorithm that would compute a complex number to the nth power.
Can...

Jul1708 05:49 AM
maze

7 
20,042 
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 
19,993 
I got this algebra problem that I have been trying to get around but the answer I get is always different from the...

Mar2206 02:31 PM
sauri

9 
19,915 
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 
19,821 
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 
19,643 
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 
19,614 
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 
19,472 
How does one do this, for example x= e^(3t)u(t4); how do you get x' ??

May603 09:38 AM
ahrkron

6 
19,448 
parallelogram properties
1.>Each diagonal divides it into two congruent triangles.
2.>Diagonals need not bisect...

Apr1706 12:17 PM
arildno

4 
19,427 
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 
19,352 
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 
19,210 
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 
18,986 
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 
18,782 
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 
18,765 
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 
18,761 
Hi everyone
Could you give me a way to calculate the period of every trigonometric functions?
thanks

Apr809 02:42 PM
AUMathTutor

4 
18,683 
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 
18,668 
Is it possible to obtain a sigma function or Taylor series function for the indefinite integral of a general Gaussian...

Nov513 04:48 PM
jackmell

23 
18,566 
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 
18,525 
edited..thanks for your help

Jan710 04:46 AM
davitz38

6 
18,475 
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 
18,455 
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 
18,444 
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 
18,325 
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 
18,318 
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 
18,263 
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 
18,245 
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 
18,211 
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 
17,996 
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 
17,917 
Hello,
I have a simple equation (maybe simple for some) that I can't understand how to get from one point to the...

Apr2404 12:55 AM
krab

7 
17,855 
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 
17,854 
(Tanx)^2(Secx)

Dec708 05:53 AM
adriank

5 
17,726 
(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 
17,624 
Assume you have a med with a 72 hour half life, but that is dosed daily. How much elimination occurs each day of the...

Mar1607 08:49 PM
Werg22

3 
17,474 