## 12 Badges

13 years, 40 days

## Difference in appearance of 3d-plot...

Maple 16

I am looking at various ways to generate surfaces in a cylindrical coordinate system. When using the cylinderplot( ) command, the default color scheme is acceptable. However, when using the implicitplot3d( ) command, the surface comes out very dark. I've played with a few color/lighting options, but I'm still not able to have the implicit3d plot look anything like the cylinder plot. Can someone suggest any color/lighting/shading options that might acheive this. My initial results are attached.

## Limitation in handling telescoping serie...

In trying to obtain the closed form for the nth partial sum for some fairly basic telescoping series. It appears that SumTools[DefiniteSum][Telescoping] works well for rational summands. However, when the same is attempted on summands that are not rational, it fails. Below are a few examples.

## Can the map command work for functions o...

For a function of one variable, I use the map command quite a bit to evaluate the function at several values of the independent variable. For example,

f:=x->x^2:

xlist:=[1,2,3]:

map(f,xlist)

How may I do something similar for a function of two variables? For example,

f:=(x,y)->x^2+y^2:

xylist:=[[1,1],[1,2],[2,1],[2,2]]:

Can the map command be used to evaluate f at each ordered pair? Maybe I'm not even using the correct data structure. Thanks!

## Why isn't the result in a consistent for...

Can anyone explain the inconsistency in the following?

## Why does solve( ) not yield the solution...

Maple 16

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?

 5 6 7 8 9 10 11 Page 7 of 11
﻿