Click Maple Math, enter x^2/(1+x).   The Preview disappears as soon as I press "/", and the result is not pretty-printed.

Look here concerning this theorem, which states that in any triangle, the three points of intersection of the adjacent angle trisectors form an equilateral triangle, called the Morley triangle.

Help me find all the lines that are carried out from the origin and perpendicular to the 3-D surface.

plots[implicitplot](tan(x*sqrt(cp^2/3220^2-1))*(cp^2/3220^2-2)^2+4*tan(x*sqrt(cp^2/6450^2-1))*sqrt((cp^2/3220^2-1)*(cp^2/6450^2-1)) = 0, x = 0 .. 14, cp = 0 .. 7000, gridrefine = 7, signchange = false),

the command above can't give me the whole figure, it lost some points in [0,3.5(approximation)],

can someone help me,

thank you very much

On my computer the following command for weighted median calculation

with(Statistics):
n:=60000;
X:=Sample(RandomVariable(Normal(0,1)),n);
w:=<seq(i,i=1..n)>;
Median(X,weights=w);

is worked for n=6000, but don't work for n=60000.

How it is work on another computers ?

Please, check.

I am working on this d2.pdf       problem,is ther any solution with maple?

 The coefficients are function of (T) and I would like Si's is also a function of T.

The well known(!) Heun's equation is,

df:=diff(y(z),z,z)+(gamma/z+delta/(z-1)+epsilon/(z))*diff(y(z),z)+(alpha*beta*z-q)/(z*(z-1)*(z-a))*y(z) = 0;

The solution is the general Heun's functions and it should be written as HeunG according to the help file of Maple 14 but my solution is found in terms of some function called HG which is not listed in the help system.

1. Are they the same?

I am using display command to get implicitplot. But I only get the graphs in one red colour. I want to get graphs in different colours. How to do that? 

Hey everyone.

I have a wierd problem when using the "Units[Standard]" addon.

I'm trying to do some simple thermodynamics calculations, and need to raise certain values in an irrational power.

It looks like this:

restart:
with(Units[Standard]):

n:=1.38:
p1:=1.1[bar]:
v1:=3[dm^3]:
v2:=0.4[dm^3]:

p2:=(p1*v1^n)/(v2^n):

If I execute it, I get this error:
Error, (in Units:-Standard:-^) a unit can only be raised to a rational power

I wish to solve the following equations simultaneously:

(diff(g(t), t, t))*f(x)-(diff(f(x), x, x))*g(t) = 0

and

(diff(f(x), x))^2*g(t)-(diff(g(t), t))^2*f(x) = 0

I searched the help files and did the following:

I have tried using solve but get an error

solve({`&x`(diff(g(t), t, t), f(x))-`&x`(diff(f(x), x, x), g(t)) = 0, `&x`((diff(f(x), x))^2, g(t))-`&x`((diff(g(t), t))^2, f(x)) = 0}, [f(x), g(t)])

I really like this package:

http://www.maplesoft.com/applications/view.aspx?SID=1671

But it seems to be impossible to intersect more than two areas:

restart;
with(InequalityGraphics);
inequalityplot(sin(x)+4*y>8 and x*y>1 and y<3-x,x=-2..4,y=-2..4,feasiblepoints=30);

It works if I leave out a condition:

inequalityplot(sin(x)+4*y>8 and x*y>1,x=-2..4,y=-2..4,feasiblepoints=30);

1. How do I 
2. Write a maple program to calculate the probability that k cards in 3-dimensonal set game (out of 27 cards) contain a set for k=3…9.

      3  randomly generate 12 cards in 4-dimensonal set game, either find a set or report “no set”.

I selected the whole document and expanded the document blocks. There near the top of the document were nine copies of "plots[interactive]()" all in a row. Deleting them fixed the problem. Seldom is a fix so easy. Many thanks.