Hey.

I need to get maple to calculate y = mx+c from  a two given vectors.

I need to use the two given vectors to calculate m of the slope. But i am stuck as i cant calculate c.

I think the American Formula is y = mx + b

c is the Y axis intercept.

As far as i am aware m = diff of x / diff of y?

I was thinking i could use linear algebra to solve the formula. but there are two unknowns, y and c, so not sure how to go about this on.

Any help appreciated. Thanks

I have a matrix (made by Matrix palette)

> LapMatrix := Matrix(3, 3, {(1, 1) = 1/sin(Theta)^2, (1, 2) = -cos(Theta), (1, 3) = 0, (2, 1) = -cos(Theta), (2, 2) = 1/sin(Theta)^2, (2, 3) = 0, (3, 1) = 0, (3, 2) = 0, (3, 3) = 1});

Maple calculated the 3 eigenvalues.

When I typed

(v,e):=Eigenvectors(LapMatrix)

Maple said

Error, (in LinearAlgebra:-LA_Main:-Eigenvectors) expecting either Matrices of rationals, rational functions, radical functions, algebraic numbers, or algebraic functions, or Matrices of complex(numeric) values

Hello!

1) I want to transform a polynomial in variables x_1, ... , x_n into function K^n -> K

Example:

given y[10] := x[10]+x[1]^2+x[2]*x[5]+x[3]*x[8]

i want to view y[10] as a function and evaluate it at point (x_1, ..., x_n)

2) Given m such polynomials y[i] I want to define a funktion K^n -> K^m by viewing every y[i] as a coordinate function

Example:

f:=(y[1],...,y[m]) every y[i] beeing a polynomial in x_1, ..., x_n

Hi,

Basically , I was doing some calculation algebracly.

I got some out like " arc(    AAAAAA  , BBBBBB) , arc( CCCCC,  DDDDDDD) "

I wonder what the comma between  A ns B mean?

meaning arc (AAAAA) and acr (BBBB)??

dose that mean I have 4 answer?

+++++++++++++++++++

I was solving some sin,cos function

I can find the numerical values of the answer

Hi

Using fsolve I evaluate a system of 32 vars 32 eqs:

solutions:=fsolve(equations,{C1,C2,C3..etc...C30,C31,P},P=0..10);

For most vars there is a unique answer, but P is the solution to a trancendental equation. When I specify a range to find s0lutions in, fsolve returns the largest solution default. Unfortunately, I need the smallest nontrivial solution.

Does anyone know a way of retrieving the first solution in the range?

Thanks in advance.
Erik

Please help!

Hi guys,

I'm having trouble trying to get this feature to work.  I've defined a function, however, when I try to get execute a VolumeofRevolution command, all I get is the repeated command written in blue. ..

I've attached the worksheet.Download 6440_volume.mws
View file details

Thanks for any help!

Hi there,

I got two ordered lists of data (X and Y coordinates of body).

How I can plot a trajectory Y vs. X via pointplot?

Thank you in advance.

> y1 := x-> piecewise(0<=x<=c, m1*x+b1, c<x<=1, m2*x+b2);

I don't know why it gives me this error, I underline where the cursor goes. Can anyone tell me what is my error?

Thanks

Hi,

I want to know how much memory Maple "sees" as available on command line execution. How can I get the information that appears on the classic worksheet as "Bytes" and "Available" with a Maple command?

Thanks

Dear all,

first I use Maple 9.5:

solve(x^3-8*x^2+12*x-4,x);

gives back 3 complex roots - in this moment I again know, it isn't bug.

Then I use Maple 11 with the same result.

Next test in Maple 11:

with(RealDomain): solve(x^3-8*x^2+12*x-4,x);

gives back only 2 real roots! Way?

Thanks.  Jan

hey guys.. i have put input this in maple.. but it doesn't seem to solve it..

ode:= D(D(y(t)))- u*(1-(y(t)^2))*D(y(t)) + y(t)=0;
ics:=y(0)=0.2, D(y)(0)=0;
                           y(0) = 0.2, D(y)(0) = 0
dsolve({ode,ics},numeric);

Error, (in unknown) invalid input: op expects 1 or 2 arguments, but received 0