In ?ChiSquareIndependenceTest a contingency table is needed for input.
To construct such a table from raw data is not trivial. I suggest to include this in the statistics package.
A first try:

Crosstab := proc(A,i,j,first::evaln,second::evaln)
  

I want to solve the equation f(f(-1))=sqrt(2)+g(f(2)), where

f:=x->a/x^2-3*x+2 and g:=x->a*sin(2*x), a is an unknow. I tried

restart:
f:=x->a/x^2-3*x+2:
g:=x->a*sin(2*x):
solve(f(f(-1))=sqrt(2)+g(f(2)),a):
evalf(%);

and receive 13.02210936+4.135282756*I. 

I just updated to 16.02, and now the (writing) cursor has horrible problems, especially in text groups. Basically, it is erratic or unmoveable.

In a text group, if I move a cursor down by pressing <enter>, it will not move up with the arrow keys, or it disappears and then appears in previous groups. or a new cursor appears in the line above, but the old cursor remains, or ...

In an execution group, it does a lot of the same things, but not quite as erratic.

Prove that .If

J:=Int((3*v^2+4*v+2)*(-(3*v^2+2*v+1)/(3*v^2+8*v+4))^(1/2)/(1+2*v)^2,
      v = -2 .. -2/3) 

Then J = -8/3*EllipticK(1/3) + 8/3*EllipticPi(-1/3,1/3) + 3*EllipticE(1/3)


That integral caught my attention through a private discussion. Both MMA and Maple
only succeded up to a limit in the lower boundary, which could not be determined.

Re-writing the integrand as A/(polynomial of degree 4) using the command 'rationalize'

This is my code - and I get the wrong output.... shouldnt it be around 900 K something?

restart:with(Units[Standard]):
T:=1200*Unit('degF');convert(T,'units','K');Units[UseSystem]('SI'):
evalf(%);
                    1200 Units:-Unit('degF')
                     2000                 
                     ---- Units:-Unit('K')
                      3                   
                  666.6666667 Units:-Unit('K')
T:=1200*Unit('Fahrenheit');convert(T,'units','K');Units...

 Greetings,

I own Maple 15 Student License and I would like to change the HDD of my laptop. Is this going to pose any problems ? I am going to use the same laptop. 

Thanks 

Hello everybody,

I just realised Maple is allowed for my upcoming exam after New Year.

My plan is to have templates of the most common math problems, I might encounter for quick solutions.

Anyway, I have run into a problem with Laplace shifted data, particularly initial value problems. I have been searching for HOURS, and feel like I have look up everything on google, maplesoft and other sites without succes.

I hope some of you are able to help me. The exercise is:

Hi,

I'm trying to resolve a problem in physics (movement of a particle in a magnetic field) and plot it. I need initial conditions on both (x,y) and (x',y') but when I'm trying to put the four conditions in the initial list of DEplot, a mysterious mistake arises :

Error, (in dsolve/numeric/process_input) invalid specification of initial conditions, got {0 = 0, 0 = 1}

But here is my worksheet :

How to solve Function With Complex Numbers ????? 

please help .....

z^(1+I) + I  = 0

Hello,

I'd like to solve  a system of 3 équations and 3 unknows. The system is composed with 3 trigonometric equations and the unknows are the angles gamma_e[1], psi_e[1],phi_e[1] which belongs between 0 and PI.
I have tried this with SOLVE function and i didn't have any results

when I use s:=evalf(...), maple give me reasonable results but when I use s1:=evalf(...) for the same problem the results are different from previous case!

Can you help me, please?

Reposting an old piece of code, but with two corrections.

yuletide.mw

I thought this was a really fun visual representation of the standard normal curve, although technically the standard normal curve extends infinitely in both directions.  Of course.... you can't evaluate a graph whose x-range extends from -infinity to +infinity.  (Although Maple does a great job of evaluating such integrals, assuming of course that the integral is convergent.)

If you have any suggestions, email me!

Thanks!

And happy holidays to the entire Maple community.

Hey guys,

I installed the 64 bit version of Maple 16, but it's still running as "maple.exe*32"? There is a similar quesion somewhere here...but this hasnt solved my issue...

There is no more Maple-software installed on the notebook. The other maple-tasks (mserver.exe) are running in 64bit-mode...

some specs: Thinkpad W520, i7-processor, 8GB RAM, Win7 (64bit)

Merry Christmas! :)