Hi, I have a array with 5 numbers in it. I would like to multiply it into a 3x3 matrix, how do i do that?

for example A:=([3,5,7,9,15])

B:=Matrix([3x+4,2x-9,42],[8x+2,93x^2,6y],[5x/y,34y,32y^2])

how do i get 5 sets of output when i multiply it together? And can i get pick out each outpur as well? for example, I want the 3rd output which is the matrix multiply with 7, can I pick it out seperately if I wanted?

Please advice. Thanks

Dear all,

Some time ago I asked a question concerning the algorythm for numerical dsolve and related issues here.

I got a nice answer from pagan and implemented the algorythm.

However, since my system is big, the iterations take long time.

Here is the code itself:

sys1:=[TRIC[1],TRIC[2],TRIC[3],TRIC[7],TRIC[8],TRIC[9]]:
> sys2:=[TRIC[4],TRIC[5],TRIC[6],TRIC[10],TRIC[11],TRIC[12]]:
> GRAD:=subs(u=FF[1](t),a=FF[2](t),k=k(t),tau=tau(t),psi[1...

Hi,

I have a 1x3 matrix, with s0,s1,s2 terms in it. For example :
[(s-s1)*(s-s2). (s-s0)*(s-s2), (s-s0)*(s-s1)]

Is there a simple way that i can integrate the first one by s, second one by s0 and third one by s1?

to get a matrix for example:

[(int((s-s1)*(s-s2),s). int((s-s0)*(s-s2),s0), int((s-s0)*(s-s1),s1)]

Please advice,

Thanks.

Let S1 be the set of solutions of the inequalities x^2+ 3*x + 2 >0 and S2  be the set of solutions of the inequalities x^2 - 9>=0. I want to the set S1 union S2. What must i do? Please help me. 

I converted the package,module to a worksheet then executed the example before realizing it all executes at once. 

MyPackage := module()
        export  f1, f2;
        local   loc1;
        option package;
        f1 := proc() loc1 end proc;
        f2 := proc( v ...

I have four equations:

eqs:={8x-5z=0, -5y-2x=0, 2z-8y=0} and 13x-4y+9z=1

I've been trying for the past hour to solve both equations for x, y, and z and have not been successful.

What commands do I use to solve this problem?

I would like to save a simple plot to jpeg file on my hard disk. I've got a Maplet, and a Button which looks like that

Button['SIM']
 (
     "Save image",
     onclick=Evaluate('function'='saveImage()')
)

and a procedure:

saveImage := proc()

   plotsetup('jpeg', 'plotoutput'="plot.jpeg", 'plotoptions'="portrait,noborder");
   plot3d(sin(x)+cos(y), x=0..2*Pi, y=0..2*Pi, 'axes'='boxed');

I was solving one Math puzzle and found out a strange behaviour of the Optimization package commands in the Classic Worksheet.

Let us minimize the function 7*x+3*y under the constraint 6*x+2*y >= 49 for non-negative integers. When I type

Optimization:-Minimize(7*x+3*y, {6*x+2*y >= 49}, assume = nonnegint);

Let function f(x)=x(2011+√(2013-x²)).Find maximum and minimum value of function f(x)?

Why won't isolve show all the solutions here?

> a := 6*x+2*y >= 48:
> b := 6*x+2*y <= 60:
>
> with(plots):
> aa := implicitplot(a, x = 0 .. 10, y = 0 .. 5, filledregions = true, transparency = .5):
> bb := implicitplot(b, x = 0 .. 10, y = 0 .. 5, filledregions = true, transparency = .5):

display(aa,bb)

We can see the region of solutions.  But if we use isolve ...

I inputted the folllowing into Maple.

with(plots):
contourplot(x^2*y/(x^4+y^2),x=-1/2..1/2,numpoints=60^2,color=blue);

However it is giving me this error:

Error, (in plot/iplot2d/expression) bad range arguments x = -1/2 .. 1/2, numpoints = 3600

I don't understnad why.

My lecturer has completed this graph and I literally just copied what she had written on our worksheet in order to acheive the same...

Please write for me a code for the following problem.

Problem. Find all the values of m for which the function

f(x)= (x^2 + 2*m*x  + m+2)/(3*x+m)

is increasing in each interval (-infty; -m/3) and (-m/3; + infty)?

Thank you.

I am trying to model a multibody system using euler lagrange equation. There are 3 links in the system attached with each other by revolute joints. The first link has one end fixed with the revolute joint.

Length of links= l1,l2,l3

Angle with x axis=Theta1,Theta2,Theta3

Mass of links=m1,m2,m3

Moment of Inertia = M1,M2,M3

I am not able to find the solution of ODE system comprising of 3 ODEs which I get after solving Euler Lagrange Eq for...

Hi,i'm new with maple, please help me solve these 2nd order ODES :)

x''=-x/((x^2+y^2)^(3/2))

y''=-y/((x^2+y^2)^(3/2))

my codes are:

declare((x, y)*t)

deq2 := diff(x(t), `$`(t, 2)) = -x(t)/(x(t)^2+y(t)^2)^(3/2), diff(y(t), `$`(t, 2)) = -y(t)/(x(t)^2+y(t)^2)^(3/2)

ic2 := x(0) = 1, (D(x))(0) = 0, y(0) = 0, D(y) = 1

rosen := dsolve({ic2, deq2}, type = numeric, stiff = true, {x(t), y(t)})

Dear,

I wrote a code used for calculate integration using monte carlo method (in order to get random results).

I also wrote the code using maplet in order to get the interface.

However, when I finished I could not receive the result because of the error:

Error, (in Maplets:-Elements:-Maplet) `Maplets:-Elements:-ElementTable[typ]` does not evaluate to a module

I do not understand this error and how to correct it.

I need the help from others.