Can anyone explain the inconsistency in the following?

How do I find out if a matrix is linearly dependent or independent using maple?

Let

A =

[ 3 1 4 1 5 9 ]

[ 2 6 5 3 5 8 ]

[ 9 7 9 3 2 3 ]

[ 8 4 6 2 6 4 ]

[ 3 3 8 3 2 7 ]

Determine if the columns of A are linearly independent or dependent. If dependent, then give a dependence relation.

I know the answers to them but I just don't know how to solve them using maple. Please help..

Thank you

Consider the following 2 sets of vectors in R^4: A = {v1, v2, v3}, B = {w1, w2, v3}. You are given that A is a set of linearly independent vectors and that B is a set of linearly independent vectors.

The intersection of 2 sets is the set of elements that are common to both sets. Suppose u is in the intersection of span A and span B. Determine a system of equations that could be used to determine all such u

Hi

i want to minimizez the "Eq1(h[1],h[2],...h[n])" for all the h[i] in the ranges of -1<h[i]<1.  "n" (number of unknown variables) can be determined during the code and was not know before. how can i do this?

It must be stated that when i have Eq1 and two unknown variables such as h[1] and h[2], i wrote the following code and it works good, but i dont know how can i write mentioned command for unknown number of variables.

NLPSolve(Eq1,h[1]=-1..1,h[2]=-1..1);

thanks for your attention in advance

my function is:

f := proc (x) if 0 < x and x < evalf(Pi) then 1 elif evalf(Pi) < x and x < evalf(2*Pi) then -1 end if end proc

now it tried:

f1 := add((-1)^n*f(x-evalf(2*n*Pi)), n = 0 .. 10)

to get a periodic function.

but unfortunately it says:

Error, (in f) cannot determine if this expression is true or false: 0 < x and x < 3.141592654

already when trying to calc the sum.

Good morning everyody,

I am trying to plot values saved in a vector but I always get the same message:
Error, (in plots:-pointplot) points cannot be converted to floating-point values
How can I fix it?

Best,

ssteve

Consider the matrix

A =

[ -2 -1 ]

[9/5 4/5]

Compute A^10, A^20, A^30, A^40, and A^50 and based on the answers, determine lim of A^k as k approaches infinity (k -> infinity).

How do I solve this using  Maple?

Thank you

I am trying to get Maple to solve the following rather simple non-linear system.

x=k/4, y=-k/3, z=3k/8, 2x^2+3y^2+4z^2=9

However, solve({x=k/4,y=-k/3,z=3k/8,2x^2+3y^2+4z^2=9},{x,y,z,k}) does not give the expected results. Why not?

ErrorHelp.docx

 SEE ATTACHMENT.. Cannot find how to fix this error. Thanks!

>

Error, Got internal error in Typesetting:-Parse : "invalid subscript selector"

Good afternoon everybody,

I have a problem with the evaluation of a function. You can see the test programm I have written to test the use of functions and in the end I don't get values but the expression in letters.
I think the problem lies in the definition of g but I don't know how to solve the problem.

Thank you for your help,

ssteve

Hello, 

I'd like to identify terms before the differential terms (theta(t), diff(theta(t),t) ...)

The following code with coeff function works for  diff(theta(t), t, t)) but not for diff(theta(t), t)

Here the code :

eq1pp := R(t) = -(-sin(theta[0]+phi)*Isup-sin(theta[0]+phi)*L[fixe]^2*M[fixe]-sin(theta[0]+phi)*L[r]^2*M[r]-sin(theta[0]+phi)*L[sup]^2*M[sup]+cos(theta[0]+phi)*a*sin(phi)*L[fixe]*M[fixe]+cos(theta[0...

I have just made my first polar plot, but I am a little disappointed with the result.

Code
polarplot([(1+cos(x)^2)*(1/2), cos(x)], x = 0 .. (1/2)*Pi) 

Output

How can I remove that little gap between the grey line and the black line?

I am reading a book "The Foundatiosn of  Celestial Mechanics" available to download here http://ads.harvard.edu/books/1989fcm..book/  in pdf. There some excerise questions to do at the end of each chapter. I'm at the end of Ch 1! I haven't used the VectorCalculus side of Maple (16) and am rusty on the subject, (read as did 30 years ago)

How would i do this question?

Hi,

with great interest and surprise I read the post
"Converting Half-Angle Trig Formulas to Radicals".
Isnt it possible to evaluate cos(arccos(13/14)/3) also
to an exact expression in radicals ?
I simply do not succeed with my humble knowledge of
the Maple commands/internal workings...
Would be great if someone finds a solution ( of an 
unsolvable problem ??? ).

[Edit: Excess white space deleted.---Carl Love]

Good afternoon, to successfully complete my study on beam vibration i wrote a matlab code to produce all my calculations. This is the beginning of the ocde and shows the point were i get stuck:

prod2=5/2*  3200/4507*sin(pi*alp)*sin(pi*bet)/s*sin(pi*x)*pi^4*sin(pi*y)+19200/4507*sin(pi*alp)*sin(pi*bet)/s^5*sin(pi*x)*sin(pi*y)-6400/4507*sin(pi*alp)*sin(pi*bet)/s^3*sin(pi*x)*pi^2*sin(pi*y))*pi*exp(-5*(x^2-2*x*alp+alp^2-y^2+2*y*bet-bet^2)^(1/2))