I am solving and plotting mechanical spring vibration problems, and I keep getting an empty plot for this equation: y''+4y=2cos2t, y(0)=0,y'(0)=0. Here is how I entered it. Any help would be greatly appreciated. Thanks. e2:=(diff(y(t), t, t))+4*y(t) = 4*cos*t; s2:=dsolve([e2, y(0) = 0, (D(y))(0) = 0]); r2; rhs(s2); plot(r2, t = 0 .. 10); Error, empty plot

hi, i want to ask about random data. i have a set of randoms data.how can i compile the data into the interval that has fixed.after that i want to plot the histogram by using that randoms data.can you give me an idea to create that histogram. for your information, i have more than thousand random data.i have no idea to program the histogram. thank you..

Can the maple function map, just be considered as performing a composition ? v/r,

I have a .lib file, and I want to unpack it to read source files in it. What should I do?

I have four Matrix A,B,C,D.How can i union them together to form a new Matrix E like the follows? E:=(A,B) (C,D) E is a block Matrix formed by A,B,C,D. waiting for your help!thanks!

Maple 11, 10, 9,.. do not work under Vista yet. After a tricky installation, File Open and File Save do no work. Mathematica 5.2 and Matlab 2007 run with no problem in the same environment. I would not rush purchasing any version of Maple if it is going to run under Vista.

Hello all, I'm having a lot of trouble using the shading function. I'm trying to shade a circle a particular color but there is always an error. I found this website but I didn't figure out how to do it myself: http://www.indiana.edu/~statmath/math/maple/plotting/index.html I'm making a picture of a cartoon and my plots are all finished but the shading part is throwing me off; when I put in filled=true instead of filling the circle it makes a box the size of the radius on top of the circle. Can anyone help me?

From the forum message  HERE , I learned about both  is(...)  and  assuming...  and became interested in how they work together as compared with the way that  if  and  assuming...  worked together. Finally using the combination of  if  and  assuming...  to find the place at which  n of  x^2-n  needs to be within a range of .1 to 1 with a resolution of  .01 and with x=-1..1

Hi can we solve elliptic PDEs in maple 10.I have the laplace equation of 2 dimension

Hi, This is the condition for the components of a vectorfunction Ax,Ay and Az. vgln := RTABLE(151543900,MATRIX([[-3*y^2-2*z], [2*z-3*x^2], [3*x^2+3*y^2]],["x", "y", "z"],"field"),Vector[column]) = RTABLE(163769092,MATRIX([[diff(Az(x,y,z),y)-diff(Ay(x,y,z),z)], [diff(Ax(x,y,z),z)-diff(Az(x,y,z),x)], [diff(Ay(x,y,z),x)-diff(Ax(x,y,z),y)]],["x", "y", "z"],"field"),Vector[column]) Can someone help me solving this equation? Thank you,

Hello to everybody, I am a new user and I am a bit confused. I have a smooth plane curve f(x,y)=0 defined over a finite field k and containing (0,0). x is a local parameter at (0,0). The local ring (k[x,y]/(f))_(x,y) can be viewe inside the Laurent series field k((x)). How can I compute the expansion of an element of (k[x,y]/(f))_(x,y) in k((x))? Which packages should I use? I have Maple 9. Thank you, Paola

So I have a matrix that contains coefficients for polynomial functions and bounds for where each polynomial is defined. How do I make a piecewise out of this automatically? I could enter them by hand but the number of functions can be as high as 100. FOr example, The first row of the coefficient matrix may contain the numbers 1,2,3,4,10,11 where 1,2,3 4 would be the coefficients of the first polynomial and it would be defined from 10 to 11. Thus, if I were to enter it by hand it would look something like this: f:=x->piecwise(x>10 and x

I am a high school math teacher with a subject degree. I have enrolled in a Calculus on the computer class and the course requirements required me to get maple 10. I was excited to get it. As I went through my calculus classes I don't believe maple was around. Anyway, the math of the subject is extremely easy as it should be. The hardest thing is getting the syntax of the commands. Remembering to put the ; at the end and stuff like that but im trudging through. The reason for this email is this. I am highly considering Maple 11 in the fact that it allows text and stuff on the plots. So with this in mind I am also not seeing the way that I can learn this program well enough to make it useful in my classroom. I would absolutely love to use it for my classroom. I just don't see how to make it look good with the combination text and math in the worksheet view or even getting the document view going. I am a real newbie to this program and want to do so much more with this program. Is there anything that you'll can suggest?

How can I find a 5x5 symmetric tridiagonal T matrix with eigenvalues that equals with the zero points of the fifth T₅(x) Chebyshev polynom. I'm sure it is easy but I'm just a student and I would appriciate any help. Thenk you in advance. P.S.: A solution using orthogonal polynoms would be even more appriciated.

This is driving me crazy. I've searched here, online in general, and all the help files, but obviously it's so simple no one has ever bothered to explain it before! I'm a pretty naive Maple user, but I've been using it just fine to run some relatively simple numerical simulations. I've narrowed the problem down to this: 1.000000005 - 1 gives 5.10^-9 but 1.0000000005 - 1 gives 0 Clearly some rounding is taking place here. I've tried playing (systematically!) with all the options under tools>options>precision, but none of them seem to help. What am I missing?