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Introduction to Maple (Math 502) Assignments

Tue., Mar. 11:
Midterm Test (in class)

Thu., Mar. 6:
Bring review questions
Read: § 5.3 - 5.4
151: 3 - 5
And this: Conduct some experiments in cryptography using computers (PDF
for printing - classical HTML for terminal window browsing).

Tue., Mar. 4:
Written Assignment No. 2 (PDF for printing - classical HTML for terminal
window browsing) is due.

Thu., Feb. 28:
Read: § 5.1 - 5.2
151: 1, 2
And this: Write a Maple procedure that given a univariate polynomial f (x) and a
polynomial b(x) of degree at least 1 returns the vector of coefficients for the
b-adic expansion of f(x)

where for each j ≥ 0.

Tue., Feb. 26:
Announcement: The midterm test will be held on Tuesday, March 11.
Scan: Chapter 4
Exercises:
137: 1, 4
And this: Write a Maple procedure that given a base b ≥ 2 and a triple of vectors
equivalent to the base b representation of a positive rational number - each vector
consisting of digits relative to the base b, with the vectors in order being (a) the digit
sequence (possibly empty) to the left of the decimal point , (b) the digit sequence
(possibly empty) to the right of the decimal point before the repetition pattern, and
(c) the digit sequence (if any) that repeats - returns the positive rational number
as a fraction m/n where m and n are positive integers without common divisor .

Read: § 8.1 - 8.4
Exercises:
1. Study the formulas and do the exercise found in this web page (PDF for printing
|classical HTML for terminal window browsing).
2. What rational number is represented in base 8 by the vector triple
(u, v, w) = ([2], [1], [1, 5, 4, 6, 6, 3, 3]) ?

Tue., Feb. 19:
No class; the University will be in recess.

Thu., Feb. 14:
Read: § 3.4 - 3.6
Exercises:
93: 6 - 10
And this: Write a Maple procedure that when given a finite continued fraction,
presented as the vector   representing

with the all integers and ≥ 1 for i ≥ 1, returns the rational number it represents.

Tue., Feb. 12:
Written Assignment No. 1 (PDF for printing |classical HTML for terminal
window browsing) is due.

Thu., Feb. 7:
Read: § 3.1 { 3.3
Exercises:
63: 12, 13
93: 1 - 5
And this: Examine all iterates of the Syracuse function applied to each integer n up
to 10; 000 and find the integer n in that range having an iterate for which the
ratio /n of the iterate to the starting integer is largest. Hint: If the problem is
modified to consider only integers n up to 100, then the integer in that smaller range
having an iterate with largest ratio is 27, and the iterate presenting the largest ratio
is

Tue., Feb. 5:
Read: xx 2.5 - 2.6
Exercises:
63: 6 - 11
And this: ssq will be the name for the function defined by

ssq(n; b) = 1 + ( sum of the squares of the base b digits of n) :

 In that code if the second variable b is not speci ed, then it is understood
to be 10.

Conduct experiments with the base b having the values 2, 3, 5, and 6 to try to
determine what happens when ssq is iterated starting from various positive integers
n.

Online slides (Firefox or IE+ MathPlayer or PDF ) for the class are available.

Thu., Jan. 31:
Read: § 2.1 - 2.4
Exercises:
63: 1 - 5
And this: The Syracuse function s is defined for integers n by

The iterates of s are

For example,

Since the 8th iterate of s applied to 6 is 1, all higher iterates of s applied
to 6 are 1.

Find the 5 smallest values of n for which the first 2n+1 iterations of s applied to n
fail to yield 1.

Post assignment: online slides (Firefox or IE+MathPlayer or PDF) for the last exercise
are available.

Tue., Jan. 29: Acquire the textbook. Read through chapter 1, and try some of what is
sketched there for yourself in Maple.

About free general purpose computer algebra systems : The following items were
found through a web search, but none of them have been reviewed.

Axiom
Axiom has been in development since 1973 and was sold as a commercial product . It
has been released as free software under the Modified BSD License. It is sponsored
by CAISS, the Center for Algorithms and Interactive Scientific Software, at The City
College of New York.

Maxima
Maxima is a descendant of Macsyma, the computer algebra system developed in the
late 1960s at the Massachusetts Institute of Technology. It is free under the GNU
General Public License subject to some export restrictions from the U.S. Department
of Energy. A proprietary version of Macsyma is also available.

SAGE
SAGE is something relatively new that is not a computer algebra system but rather a
free unifying framework for various computer algebra systems, free and non-free, such
as Maple, Mathematica, Axiom, Maxima, and a number of specialist systems. SAGE
can be operated , even across the network (though usually not without permission),
in the window of a web browser.

Thu., Jan. 24:
First meeting: No assignment.

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