MaplePrimes - Questions and Posts tagged with homework

how do i make a program for shielding a nuclear reactor

nale — Wed, 22 May 2013 08:08:28 Z

A beam of neutrons bombards a reactor's wall. Consider the motion of the neutrons as a random walk on the (x,y) plane.

The neutrons then have to comply with the following conditions:

Only four directions of motion are possible (left, right, up or down).

Glider model where k=0

jenniferchloe — Mon, 13 May 2013 01:52:45 Z

Here is a link to a maple file I found describing what happens to a glider where k=.9---> k=.9.mw

I would like to see what happens to the same glider when k=0.----> k=0.mw

***k is the strength of a propeller.

How do I determine whether or not it is a sink/source/spiral/etc based on the eigenvalues?
I was trying to use

Fern Fractal Turtle command

jenniferchloe — Fri, 10 May 2013 01:57:45 Z

Using the Turtle program as seen in the attached Maple document where

R - right turn
L - left turn
F - forward movement
B - backwards movement

I have the basic shape, but I dont know how to write a procedure so that it repeats at the necessary spots to create a fern that looks like this:

fern.mw

Turtle command fractal

jenniferchloe — Fri, 10 May 2013 01:37:08 Z

Using the Turtle Commands where the following letters represent commands:

F - forward movement
B - back
L - left
R - right

Create a fractal that looks like this one:

Attached is a Maple sheet with a program ReadFile in the beginning that allows for the use of the F,B,L,R letters that I found online. Does anyone see where I took a wrong turn? (haha)

glider model, classify solutions for all position k values

jenniferchloe — Wed, 08 May 2013 16:11:29 Z

We have two differential equations that model a flight of a glider
diff(theta(t),t) = (v(t)^2 - cos(theta(t)))/v(t),
diff(v(t),t) = -sin(theta(t)) - 0.4*v(t)^2 + k,

-- We're now going to look at a model with a propeller or a small engine attached.
-- v>0 is the speed of the...

Koch Snowflake Creation

jenniferchloe — Mon, 06 May 2013 20:44:25 Z

I have these two procedures which produce 2/3 parts of my snowflake. But HOW do I angle them to put them together? Or should I modify one to cover the entire snowflake? If so, how should I modify my procedure?

This produces an "up right" fractal of a shape basically like this: __/\__

Koch:=proc(n::posint)
if (n=1) then return("F"); fi;
## now n>1
return( cat( " ",Koch(n-1), "L", Koch(n-1...

Calculus. Use Newton's method in Maple to solve

falturaiki — Thu, 02 May 2013 21:58:38 Z

Can someone please solve only #19 and #25 using Nwton's method in Maple. I really appreciate it.

The questions are attached. Thank you

Calculus Related Rates

karsonhenry — Thu, 02 May 2013 15:25:13 Z

You have been asked to design a one-liter can shaped like a right circular cylinder. What dimensions will use the least material?

-I really need help on how to correctly plug this into my computer. Thank you in advance.

a question about osculating circle

plasticman — Wed, 01 May 2013 21:33:53 Z

In 2D, graph a blue ellipse x(t)=3cos(t), y(t)=2sin(t) for 0≤t≤2∏. For t=0.5 graph a green tangent line to the ellipse and a red osculating circle. Also, give the curvature, the equation of the tangent line and the center of the osculating circle

Differential Equation, every solution verifies

jenniferchloe — Tue, 30 Apr 2013 20:47:18 Z

For the equation x'(t)=F(z), z=(x,y), with the vector field

F(x,y)= [- x(x^4 + y^4) - y, x - y(x^4+y^4)]

prove that the origin is an attractor in the future, i.e., every solution verifies:

limit as t goes to +infinity of z(t) = 0

I need to format my answer as a regular mathematical proof.

Any ideas?

Playfair Cipher

jenniferchloe — Wed, 17 Apr 2013 16:03:09 Z

I understand completely how the Playfair cipher works but I'm not sure how to begin to implement it into Maple. Does anyone know how to begin encrypting and decryptin a code using this cipher?

How do I determine the span of vectors and write the vectors as a linear combination using Maple?

Manny08 — Sun, 07 Apr 2013 01:14:51 Z

Determine if

[ 9 ] { [ 3 ] [ 1 ] [ 4 ] [ 1 ] [ 5 ] }

[ 8 ] { [ 2 ] [ 6 ] [ 5 ] [ 3 ] [ 5 ] }

[ 3 ] E (curvy E) span { [ 9 ], [ 7 ], [ 9 ], [ 3 ],[ 2 ] }

how to draw a graph of non-linear equation?

Przemo — Thu, 04 Apr 2013 12:30:54 Z

I want to draw a graph of this non-linear equation

d^2*y/dt^2+y^3-sin*t = 0

when:

y(0) =0

y'(0)=1

someone can help me ??

differential equations - task for homework

Przemo — Wed, 03 Apr 2013 10:41:19 Z

I have a problem with my three task to do in Maple (ver.16)

1. I have a differential equations:

dy/dt=-y, y(0)=1

How to do it in Maple (using Dsolve command) and how to draw this ?

2. Solve and draw second-order differential equation :

d²y/dt²+y(t)=sin t ; y(0)=0 ; y'(0)=1

3. Solve and draw equation:

Problem 1 (help me !!!)

yangtheary — Sat, 30 Mar 2013 19:25:37 Z

Mrs Bopha, used phone that had 7 numbers. Som didn't clear her phone number.Som remember 4 numbers in the first that had 9 ,8 , 7 and 7 Som didn't clear serial number 5 about 1 or 2.For serial number 6 didn't remember. But Som remember that serial number7 equal 5 minus serial number 6.How many time that Som should be chose right phone 's number to Mrs Bopha?