I have a polynomial system that I'd like to find ONE solution of (there may be many, so I want the program to terminate after 1 is found, since I only need to know that there IS a solution). In this system, the unknown variables are a_i, b_i, c_i, d_i, s_i, t_i, r_i, l_i, for i = 1, 2, 3, 4. Thus I want the solution in terms of these variables. The system is given below.

\begin{align*}
q & = \sum_{i = 1}^4 a_i s_i, \\
w & = \sum_{i = 1}^4 a_i t_i, \\

ROOT1.mw

Hallo Guys,

This questions was asked 7 years ago and I hope now there is some knowldege how to do it ( else Maple sucks that in 7 years they havent figured out it yet ) ...

So basically How do you change the inline plot size window in the worksheet itself by command line ( For Noobs please do not show off your "Skills" by saying that you can do it b Mouse : I know that much else wont be here :P  and those who want to tell me how to do it in a jpeg/etc also Shut up ! ...

Hello,

I am trying to obtain an inverse of a symbolical 4 by 4 matrix in order to diagonalize it. I have noticed that the command 'Inverse' seems to find a matrix inverse almost instantaneously, whereas the Matrix Inverse command from the Linear Algebra package takes far longer - on the order of hours. Can anyone explain the difference between them? It seems like 'Inverse' is roughly speaking, an approximation to 'Matrix Inverse', however I have not been able to find...

I'm using Maple to come up with equations, and then I'm substituting in variable names for functions which I can then output to Matlab.

I haven't had any problems until I ran into partial derivates described by the D[] operator.  For example, if i have a function f described by f(x(t),y(t)) and I differentiate it wrt t, I get 

D[1](f)(x(t),y(t))*(x(t)_dot) + D[2](f)(x(t),y(t))*(y(t)_dot)

I want to make a substitution for D[1](f)(x(t),y(t)) and D[2...

Hi,

     I have a a matrix with one symbol and all others are numbers. I got this from doing 

   M := (1-x)*N + x*A :

 So my parameter is x, and N, A are numeric (real, symmetric) matricies. I want to plot the eigenvalues as x=0..1, but for a large matrix, say 25x25. Eigenvalues(M) only returns 17 eigenvalues, and more so, it doesnt keep them in the same order when plotting!

My issue is when Maple computes the...

The equation 

solve(surd(-2*x+4,3)+surd(x+2,3)+surd(x -6> ,3)=0);

has three different integer solutions.

I want to choose the integer number a, b, c, d, e, f to the equation 

(a*x + b)^(1/3) + (c*x + d)^(1/3) + (e*x + f)^(1/3) =0 

has three different integer solutions.

I tried

restart:

L:=[]:

for a from -10 to -1  do

https://en.wikipedia.org/wiki/Coproduct

would like to do a sheaf which is a mapping from subset of prime ideal to coproduct of ring Ap where p belong to Prime ideal of A

Hi,

I have two general 4x4 matrices S and R subject to the given contraints (eq1, eq2, respectively). First of all, I was trying

to see if there are any specific matrices T such that the equation S.R=T (subject to the constraints of eq1 and eq2)

does NOT exist (i.e. there are no matrices S and R such that the equation holds). I tried many examples but couldn't find

any so now I suspect that any possible T has a solution.

So firstly, I...

Hi,

Previously I got some great help from Markiyan Hirnyk who introduced me to the DirectSearch package. I am having a little trouble implementing it for this function:

y := proc (E) options operator, arrow; -_C4*MathieuS(-a, -q, E)*(Int(MathieuC(-a, -q, E)*(-a+2*q*cos(2*E)), E))+_C4*(Int(MathieuS(-a, -q, E)*(-a+2*q*cos(2*E)), E))*MathieuC(-a, -q, E)-_C2*MathieuC(-a, -q, E)-_C3*MathieuS(-a, -q, E)-_C4*MathieuS(-a, -q, E)*MathieuCPrime(-a, -q, E)+_C4*MathieuSPrime(-a, -q, E...

Hi,

I'm preparing for GRE and i came across this question from 800score.com while reviewing concepts for probability.

In a deck of 52 standard playing cards, what is the probability that pulling a single card from the deck 

will produce a black card?

http://www.800score.com/content/gre/guidec7dview1a.html

Please...

Hello,

I like to plot the Bode diagram of function transfer. For that purpose, i use Dynamicsystem package.

I obtain my transfer function by 2 different methods : 
- direct method
- state space method.

The issue is the fact that i don't obtain the same results with the 2 methods.

 state_space_metho.pdf

restart;with(Statistics):

MartinPoisson := (p/((p+2*q*T)/(1+p*T+q*T^2)-(p*T+q*T^2)*(p+2*q*T)/(1+p*T+q*T^2)^2))^r*r^2*T^n/factorial(n);

Dist := subs(T=t,MartinPoisson) assuming t > 0;

MartinDist := Distribution(CDF = unapply(piecewise(t>1,Dist,0),t));

MartinDist := Distribution(CDF = unapply(Dist, t)) assuming t > 0; #Change 2

X:=RandomVariable(MartinDist);

MartinDensity := PDF(X,t);

MartinDensity := subs(t=x, MartinDensity);

DOES ANYONES HAS THE SLIGHTEST IDEA OF HOW I COULD MODEL AND SUMILATE THE WAVE PATTERN OF A REGISTERED EARTHQUAKE??? FOR INSTANCE I AM STUDYING THE EARTHQUAKE EFFECTS OF THE NOVEMBER QUAKE IN GUATEMALA OF LAST YEAR. I WOULD LIKE TO MODEL THE MOVEMENT OF THAT QUAKE OVER A GIVEN AREA NEAR THE EPICENTER.

ANY HINTS OF HOW I COULD EVEN START TO MAKE THE MODEL AND SIMULATE??

Hi there, i want to write a procedure which can initiat the sexond procedure accodingly. For example, f1(a,b,c,d,e,f) where a,b,c,d,e,f is set of different atoms. say, Here I only need to deal with a and d type atoms to calculate energy values through f2 procedure.    

f1:=proc(a,b,c,d,e,f)   
.....
.....
end proc;

How i can write a procedure to assign values, like f1(yes,no,no,yes,no,no) or with number as f1(1,0,0,1,0,0) to show i only need a and d results.