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

Feb2313 09:23 AM
micromass

1 
38,837 
*Note: I think questions 24 are erroneous?
1) There does NOT exist any x \in \mathbb{R} such that x \in \left(...

Sep1005 10:40 AM
hypermorphism

6 
1,829 
hi everyone, there si this problem that i can't figure out and i was looking for some help
FIND THAT ANGLE!!!!
In...

Sep1005 03:31 AM
ntcctnntcctn

4 
1,370 
Can anyone analytically solve these 2 simultaneous equations for c & d, where a and b are known?
a = sin(c) *...

Sep905 04:44 PM
ChrisHarvey

1 
1,156 
Hello,there i would like to know what are hiperreal numbers (i think that are numbers including infinitesimals and...

Sep905 06:54 AM
Hurkyl

2 
994 
My friend thought of this some time ago.........
1/3 is equal to .333333...
2/3 is equal to 2*(1/3) or .66666......

Sep905 06:47 AM
HallsofIvy

3 
1,548 
Hi there,
I have a range of results from scanning a piece of metal of length L. The results from the scan are %FSH...

Sep805 11:53 AM
Watts

4 
1,846 
f(x)= sin 3x  (1/2)sin x, find the period.
i know the period for sin 3x is 2pi/3 and the period of sin x is 2pi...

Sep805 10:44 AM
HallsofIvy

2 
1,459 
Hi more questions again... :blushing: :blushing: i am having a hard time figuring out these questions...
1)a)how...

Sep705 10:45 AM
Doodle Bob

3 
835 
hey guys, i am stuck on one more problem. Can anyone guide me onto the right path on how to start this?
Use this...

Sep505 10:11 PM
robphy

3 
6,115 
Hello, can anyone guide me with this problem?
Find nonzero vectors a ,b , and c such that a x b = a x c but b...

Sep405 11:11 PM
balakrishnan_v

5 
1,178 
for a curve defined by y=f(x) the radius of curvature is defined as
power 3/2. I need a good neat & understandable...

Sep405 04:32 PM
amcavoy

2 
16,856 
Hi, guys!
I've graduated some time ago, and by now have completely fogotten all those matrix rules. Could you...

Sep405 01:29 PM
oki

8 
1,617 
i need help with this problem
The base of the pyramid is 100 blocks by 100 blocks; each successive layer is one...

Sep305 11:57 PM
florino23

2 
852 
Just curious, why is \phi calculated as the angle between the +z axis and a position vector of a point of a...

Sep305 03:40 PM
amcavoy

3 
1,464 
Y^6+124Y^3125
the ^ means to the power of
asks to factor
help

Sep305 03:38 PM
Chrono

22 
6,256 
Can anyone explain this simplification?
http://img379.imageshack.us/img379/1786/maproblem1bm.jpg
Kindly...

Sep305 11:43 AM
HallsofIvy

5 
4,654 
Is it a reasonable statement to say either:
1) \frac{\infty}{\infty} = 1 ?
2) \frac{0}{0} = 1 ?
\phi

Sep305 11:38 AM
Berislav

6 
3,010 
i heard that the shortest proof of the pythagorian theorem is in a temple in India. does anyone know which temple and...

Sep305 05:13 AM
iNCREDiBLE

1 
2,661 
x^2+y^2+z^2=4
(x+2)^2+(y1)^2+(z+2)^2=4
find volume inside both.
thanks,

Sep205 12:05 PM
amcavoy

3 
1,418 
Hi,
I am looking for a solution to this equation for w. Is an analytical solution possible?
PI.w.csch(PI.w/2.a)...

Sep205 08:29 AM
Spiffalski

0 
909 
Hello, can anyone help me with this problem?
Find an equation of the plane through P (3,3,1) that is...

Sep105 11:41 PM
amcavoy

1 
734 
I am curious about the different integral transforms. I found definitions online, but where did they come from? Does...

Sep105 04:24 AM
lurflurf

5 
1,879 
If P , \; Q and R each represent a point in \mathbb{R} ^ 3 , then is it true that
\left\ {\overrightarrow...

Sep105 04:11 AM
quasar987

5 
883 
Does anyone have any useful websites for 2D geometry that discuss some more advanced concepts for a person interested...

Aug3105 09:34 PM
amcavoy

2 
3,711 
I once saw a programme not so long ago, showing a young man who was calculating something like 56^6 in a matter of...

Aug3105 11:17 AM
quark

8 
1,657 
Dear experts.
Did you hear about a unity of algorithm (or an algorithm’s unity).
Can you explain that is it? TIA.

Aug3005 12:05 PM
nworm

0 
1,232 
Find the Values of the constants in the following indentities.
A(X^2 1) + B(X  1) + C = (3x 1)(x +1)
AX^2 ...

Aug3005 12:04 PM
HallsofIvy

16 
1,696 
Simple for you guys i guess, But tough for me  Guess im just thick!
x^4 +Ax^3 + 5x^2 + x + 3 = (x^2 +4)(X^2 x +B)...

Aug3005 12:00 PM
HallsofIvy

3 
1,084 
Which class would study the solutions to cubics, quartics, and Abel's proof? Would this be an analysis class or...

Aug3005 11:46 AM
mathwonk

5 
3,387 
I took physics last year at HS. and my buddy is asking me for help and I cant remember any of this. Here is what I...

Aug2905 10:00 PM
lurflurf

3 
1,276 
How does one proceed to solve an equation of the form:
a^x + x^b = c
Where x is the unknown (real or complex)...

Aug2905 02:22 PM
Aphex_Twin

6 
1,633 
I need an algebric proof of the theorem of similar triangles (C/c=A/a=B/b).

Aug2905 10:21 AM
Werg22

7 
4,728 
Runner A is initially 4.54 mi West of a flagpole and is running with a constant velocity of 7.06 mi/h due East. Runner...

Aug2905 08:05 AM
SGT

4 
1,224 
o:) hi, this is me again.i was wondering if you could teach me how to do these 2 questions (???) means to...

Aug2905 05:06 AM
VietDao29

6 
913 
Could somebody who knows well the method of numerical solutions of system of nonlinear algebraic equations nonlinear...

Aug2905 05:04 AM
alexyan

6 
11,802 
Hello :D
ABCDEFGH is a cube with a side of 3cm. The points I and J are defined by:
vector BI = 1/5 of vector BF...

Aug2905 02:46 AM
VietDao29

1 
910 
Hi please, someone help me with those problems?
It's about three dimension space and it is about vectors...

Aug2805 06:46 PM
mathmike

4 
998 
(5x^46x^3+31x^246x20)/(2x^53x^4+10x^314x^2+5)
I got
it = 1/(2x+1) + 4.75/(x1) + 2/(x1)^2 + 8.75(x^2+5)
...

Aug2805 04:46 AM
lurflurf

3 
2,398 
So I work at a retail store, and the way the company works, they determine how many hours are given to each store by...

Aug2705 09:25 PM
CRGreathouse

1 
1,328 
Here's a riddle I'm having trouble solving:
There are N points on a plane. Find the two points that are closest, in...

Aug2705 12:17 PM
Atlas

5 
1,521 