## How do I get the upper/lower bounds of a given for...

Is there a way in Maple to compute the symbolic upper bound and lower bound of a given symbolic formula? Thanks. Bo

## What Is LaTeX ?...

I have no idea what LaTeX, is other than a helpful tool for publishing. However, I'd like to start using it for several reasons, but don't know where to begin. Can anyone suggest a very first starting point for someone in my position ? v/r, Thanks,

## Some questions from a new user...

I'm new to Maple. I'm quite competent with Matlab, with competent meaning I have some experience using it for analysis of physical data. I'm very experienced in using my TI-89 Titanium I have decided to give Maple a try since I'm not satisfied with the way Matlab handles symbolic expressions. I also want to tryif there's anything better than Matlab. I'm majoring in physics, and I hope to get my bachelor degree in a year. So far I have been writing all my assignments that needed a computer in Microsoft Word, but that is far from satisfactory. I have been considering learning myself LaTeX, but I have been thinking if it's just as good to use Maple to write articles and documents. Can I write an article as fast in Maple as I can in LaTeX? Speed is key for me naturally. Can I write LaTeX directly in Maple?

## Getting input from a user...

I am writing a program in which, after some calculations, I want to give the user some information and then ask them if they want the program to continue. I've tried using readline(terminal) and readstat, but I have the following problem: the information that I want the user to see is printed at the bottom of the screen and Maple gives a dialog box to get the user input. With the dialog box showing, the user can't scroll down to see the data. Is there a way to make sure that the data shows up before the dialog box pops up? Or is there another way to get input from a user?

## values on x-axe...

I was wondering if I could change the values on the x-axes. I want to have the value 3500 at origo and 0 at "3500" normally is, can this be done?

## Subscripts...

On subscripts. I like to use them as part of variable names but Maple does this to me.

Lets say I have

## Differential...

My question is about how Maple handles differentials.

In its derivation of an equation for pressure as a function of depth my physics text comes up with this:

from which it gets

## Text in 2D without the math...

How can I write with 2D math in text mode? That is, I want to create a document with mathematical expressions but I don't want Maple to do any mathematical operations on them. Imagine that you're trying to write a page in a textbook with expressions put in normal notation and interspersed with comments - that's what I'm trying to do. I've tried Text>Maple Input, Text>2D Input, Text>2D Math, Text>Normal, etc, etc but they all just put out 1D. And if I try to use "Math" instead it invariably does some sort of simplification or normalization or some such when I don't want it to touch the expressions I enter at all.

## Typesetting...

Hi, I have a question. I work with maple in a fairly unusual way. I use the vim editor and the command line interface (don't try to change this it won't help). Then I typeset my results using the latex mode. I am wondering of late if I can read my input into the graphical version of maple and control the formatted output produced by the gui. i.e. is there some analog of `latex/special_names`[x1] := `x_1` For the gui interface. I can't seem to find this documented anywhere. Thank you, Derek

## piecewise function...

Hi all I have a(x) and b(x), a(x) is only interesting from x=0..5 and b(x) from 5..10. How can I define those to into one c(x)? I guess I need the piecewise function, but I don't understand anything from the help file.. Can anyone please explain it to me, thanks.

## Graphing a moving point about a spehre...

i need to take a sphere and and graph a point going around the sphere. i have the code: restart: with(plots): with(plottools): x1:=(u,v)-> sin(u*Pi)*cos(v*Pi); y1:=(u,v)-> sin(u*Pi)*sin(v*Pi); z1:=(u,v)-> cos(u*Pi); x2:=(u,v)-> 3*sin(u*Pi)*cos(v*Pi); y2:=(u,v)-> 3*sin(u*Pi)*sin(v*Pi); z2:=(u,v)-> 3*cos(u*Pi); p1:=plot3d([x1(u,v), y1(u,v),z1(u,v)] ,u=0..1,v=0..2,color=blue, axes=normal): points:={seq([x1(k/50),y1(k/50),z1(k/50)], k=0..314 )}: display(p1); pointplot3d:(points); only i get the error Error, invalid input: x1 uses a 2nd argument, v, which is missing how do i put in arguments for u & v?

## Help in maple homework...

I had a new homework in maple but there is two questions that i have a hard time figuring them out. If somewone could help me it would be nice. 1. It says that E=L{v1,v2,v3,v4} (all vectors) where v1= (-5,3,2,0,1), v2=(0,-1,1,3,0), v3=(3,1,0,0,2) and v4=(1,4,4,2,0). Discribe E, which is a subset of R5 (and the teacher would like a description like this exemple: E={(x,y) ∈R2 ∣ 2x-3y=2} 2. A matrix: A := Matrix(5, 5, {(1, 1) = 1, (1, 2) = 0, (1, 3) = 0, (1, 4) = 0, (1, 5) = 0, (2, 1) = 0, (2, 2) = 4, (2, 3) = 0, (2, 4) = 0, (2, 5) = 0, (3, 1) = 0, (3, 2) = 0, (3, 3) = 52, (3, 4) = 0, (3, 5) = 0, (4, 1) = 0, (4, 2) = 0, (4, 3) = 0, (4, 4) = 7, (4, 5) = 0, (5, 1) = 0, (5, 2) = 0, (5, 3) = 0, (5, 4) = 0, (5, 5) = 3})

## expand...

I'm generating fairly complex shapes and dumping the x,y,z coordinates of each point to a text file. The shapes have a high degree of spherical symmetry, so they usually look like a torus or ellipsoid. I've been using pointplot3d to plot the shapes using 'style=line'. The result is something that looks close enough to a wireframe plot. However, for my final thesis I will be submitting, I'd like to show the shapes opaquely (with hidden lines). Basically, the type of plot generated by: `plot3d(sin(phi)^2, theta=0..2*Pi, phi=0..Pi,coords=spherical,style=wireframeopaque,color=black);`