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

Feb2313 09:23 AM
micromass

1 
39,014 
51^(51) \equiv x (mod 8) .
Does it mean anything at all?
If it does what is x?

Jun1312 07:29 AM
Infinitum

15 
1,417 
Hi Folks,
Can anyone advise me on particular integrals (any relevant websites or vids)?
In 'particular', I am...

Jun1312 05:35 PM
haruspex

8 
2,725 
In this text, I will ask a question about the power series expansion of exponential and logarithmic integrals.
Now,...

Jun1312 09:13 PM
haruspex

1 
1,231 
Hi guys I am just wondering if there exists an alternate nth power function that doesn't involve any exponents. Thank...

Jun1412 06:12 PM
eddybob123

14 
2,000 
theres a quadratic equation lx^2 + nx + n where its roots are in the ratio p:q .we need to prove that
...

Jun1412 09:27 PM
Vishalrox

4 
1,791 
I came across this in Griffith's E&M book and can't quite figure it out. After going through the vector product rules...

Jun1512 07:23 AM
AlephZero

9 
8,857 
I am quite new to mathematica so hope this is a simple problem.
I would like to plot the solution of a differential...

Jun1512 09:15 AM
IN88

0 
1,142 
I have two triangles in 3d. I need to calculate transformation matrix(3X3) between two triangles in 3D.
1)How can I...

Jun1512 08:16 PM
haruspex

3 
1,668 
While we calculate cross product of two vectors let A and B
we write ABsinθ.
And while we calculate dot product of...

Jun1612 01:20 AM
the_emi_guy

7 
9,108 
Hello!
I am currently reviewing some basics on trigonometric identities and have noticed that nobody includes a...

Jun1612 06:16 AM
BGN

0 
764 
Perhaps I should have already learned this, but I just can't seem to grasp why an angle is the ratio of two sides of a...

Jun1612 11:28 AM
algebrat

5 
1,445 
is there any formula to compute the gaps between primes which could be true to all prime numbers?..thanks..please help!

Jun1612 11:50 PM
coolul007

18 
2,070 
Hello,
How would you discuss this system of equations by Gauss's method?
...

Jun1712 09:56 AM
inverse

2 
842 
Is it possible to solve any equation if we use continued fractions? I've heard that polynomial equations could be...

Jun1712 10:04 AM
Arian.D

0 
987 
f(x) = e^{x} f(x) with f(x) > 0
Is there anything I can say about the general shape of this function (defined on...

Jun1712 11:21 AM
tinytim

3 
1,075 
Hi I was wondering if there is any way to simplify this expression or if it's already in its simplest form. Thank you...

Jun1712 05:22 PM
algebrat

10 
1,495 
hi,
i was unfortunately unable to find any information about the order of operations in which to apply min and max....

Jun1812 01:54 AM
haruspex

5 
1,444 
We know that the rationals are dense in the reals. So between any 2 reals we can find a rational. It seems to me that...

Jun1812 03:11 AM
cragar

4 
1,222 
Well, I am now trying to figure out a single variable expression for Sin. I have a couple ideas using some pieces of...

Jun1812 08:31 AM
Millennial

21 
2,967 
I don't see how a business owner would be interested in using inverse variation to drive his sales up. He must know...

Jun1812 02:28 PM
moonman239

0 
812 
Not sure where to post this, so thought in general maths would be as good a place to start as anywhere.
My question...

Jun1812 02:46 PM
smith873

0 
880 
So I have a dataset...
I am trying to use lets say values in column 1 to determine which values I need to plot from...

Jun1812 05:39 PM
meldraft

1 
807 
(x+3)(x4)(x2)(x+1) = 24
Can we change it into a quadratic equation without multiplying the expressions under those...

Jun1812 08:57 PM
pwsnafu

2 
719 
I have been reading on Galerkins method of weighted residuals according to which an approximate solution to a...

Jun1812 11:25 PM
svishal03

5 
1,557 
This equation uniform silica particle by Aggregative growth model:
I want solve this equation by Euler method by...

Jun1912 05:11 AM
svenki7

0 
664 
Consider a set of n numbers, and let their arithmetic mean be X.
Suppose a new number Y, is added to the set. Prove...

Jun1912 03:18 PM
mathman

2 
971 
Let f(x,y) = x^2 y  xy = x(x1)y be a polynomial in k.
I am looking for the singular subset of this function. ...

Jun1912 03:25 PM
naturemath

5 
993 
Just curious because it would really work into a few problems im doing

Jun1912 08:21 PM
Curious3141

6 
2,778 
Hi, I am just starting to really get into math and I was wondering if there were any books for understanding math on a...

Jun1912 11:00 PM
xavra42

9 
4,538 
if I have square matrix A whose decimal elements a_{i,j} = \frac{v_i}{v_j} how do I find (or approximate) the vector...

Jun2012 02:55 AM
haruspex

1 
549 
Why in partial fractions does the power of the denominator have to be one more than that of the numerator, when...

Jun2012 06:35 AM
haruspex

1 
995 
I apologise for choosing not so related topic, but I could'n find better one. I will have to read some math...

Jun2012 06:38 AM
haruspex

3 
835 
How do we graph a quadratic equation in the form ax^2+bx+c =0?, or an equation like , f(x)(or y)= , where D = b^2 ...

Jun2012 07:10 AM
HallsofIvy

4 
944 
How do we treat expressions under a sqaure root in inequalities ? Like for ex.
x+4< Math.sqrt(x^28x12) (sorry,...

Jun2012 11:02 AM
Diffy

1 
1,049 
Are there any numbers in mathematics that are not complex numbers?

Jun2012 12:54 PM
micromass

2 
729 
for example i have this :
F={1,2,3,4,5}
so F=1,2,3,4,5
but how to randomize the set ?
i want to say F=5,3,4,2,1 or...

Jun2012 01:53 PM
Number Nine

9 
1,001 
u = unit of distance.
Take a solid cube of dimensions (1u,1u,1u) with center at (0,0,0).
Cut it straight along x, y...

Jun2012 04:47 PM
haruspex

2 
949 
I just wanted to say first of all that I am not looking for any specific answers, just hoping someone could shed a...

Jun2012 05:09 PM
SteveL27

6 
1,180 
Hello,
I have a problem related to least square fit of data. Let me start from a step back. I have a set of points,...

Jun2012 06:55 PM
hotvette

4 
1,391 
I'm writing a C++ program to bruteforce solve a puzzle, but in order to determine the number of iterations the loop...

Jun2012 07:25 PM
haruspex

1 
1,006 