Free master math word problems 1.6 software for linux

Solving word problems is an area where elementary students overwhelmingly display difficulties. Master Math Word Problems program can help sharpen skills through practice. Third through fifth graders learn to watch for key words and translate those into mathematical operations.

Students can learn new math skills, practice logic, get extended practice with word problems, but most of all they learn that they must read the problem. With regular practice your students may become master math word problem solvers.

Download and try out Master Math Word Problems.

Ump is a program in which all sorts of calculations can be done, from the simplest to the more advanced. It handles complex numbers and matrices of those.

The complex numbers are built up by either floating point values or ratios of arbitrary sized integers. Ump also draws graphs, ordinary, polar, and parameter, which is done through an easy to use user interface.

Unnamed Math Program is also possible to write your own functions using the built in editor.

Math::Complex is a Perl module with complex numbers and associated mathematical functions.

SYNOPSIS

use Math::Complex;

$z = Math::Complex->make(5, 6);
$t = 4 - 3*i + $z;
$j = cplxe(1, 2*pi/3);

PasswordMaker project is a small, lightweight, free, extension for Internet Explorer, Firefox, Mozilla, Netscape, Flock, and Yahoo! Widgets which creates unique, secure passwords that are very easy for you to retrieve but no one else. Nothing is stored anywhere, anytime, so theres nothing to be hacked, lost, or stolen.

How It Works:
You provide PasswordMaker two pieces of information: a "master password" -- that one, single password you like -- and the URL of the website requiring a password. Through the magic of one-way hash algorithms, PasswordMaker calculates a message digest, also known as a digital fingerprint, which can be used as your password for the website.

Although one-way hash algorithms have a number of interesting characteristics, the one capitalized by PasswordMaker is that the resulting fingerprint (password) does "not reveal anything about the input that was used to generate it." In other words, if someone has one or more of your generated passwords, it is computationally infeasible for him to derive your master password or to calculate your other passwords. Computationally infeasible means even computers like this wont help!

Network technology evolves quickly, but available bandwidths are still not sufficient for fast transfers of big files to a bunch of clients (for example populating operating systems installation images).

This paper describes Multicasting Master-Slave Network Filesystem (mmsnfs) -- a new method of distributing entire filesystem among several client-machines simultaneously and efficiently.

Moreover it provides mechanisms for modifying distibuted filesystem structure reliably and securing it against introducing inconsistencies. It is designed to be used in small networks of similarly-configured machines, for instance university labs or internet cafes.

Math::NoCarry is a Perl extension for no carry arithmetic.

SYNOPSIS

use Math::NoCarry;

my $sum = Math::NoCarry::add( 123, 456 );

my $difference = Math::NoCarry::subtract( 123, 456 );

my $product = Math::NoCarry::multiply( 123, 456 );

No carry arithmetic doesnt allow you to carry digits to the next column. For example, if you add 8 and 4, you normally expect the answer to be 12, but that 1 digit is a carry. In no carry arithmetic you cant do that, so the sum of 8 and 4 is just 2. In effect, this is addition modulo 10 in each column. I discard all of the carry digits in this example:

1234
+ 5678
------
6802

For multiplication, the result of pair-wise multiplication of digits is the modulo 10 value of their normal, everyday multiplication.

123
x 456
-----
8 6 x 3
2 6 x 2
6 6 x 1

5 5 x 3
0 5 x 2
5 5 x 1

2 4 x 3
8 4 x 2
+ 4 4 x 1
-------
43878
Since multiplication and subtraction are actually types of additions, you can multiply and subtract like this as well.

No carry arithmetic is both associative and commutative.

RPN is a Perl extension for Reverse Polish Math Expression Evaluation.

SYNOPSIS

use Math::RPN;
$value=rpn(expr...);
@array=rpn(expr...);

expr... is one or more scalars or lists of scalars which contain
RPN expressions. An RPN expression is a series of numbers and/or
operators separated by commas. (commas are only required within
scalars).

The rpn function will take a scalar or list of sclars which contain an RPN expression as a set of comma delimited values and operators, and return the result or stack, depending on context. If the function is called in an array context, it will return the entire remaining stack. If it is called in a scalar context, it will return the top item of the stack. In a scalar context, if more than one value remains on the stack, a warning will be sent to STDERR.

In the event of an error, an error message will be sent to STDERR, and rpn will return undef.

The expression can contain any combination of values and operators. Any token which is not an operator is assumed to be a value to be pushed onto the stack.

An explanation of Reverse Polish Notation is beyond the scope of this document, but it I will describe it briefly as a stack-based way of writing mathematical expressions. This has the advantage of eliminating the need for parenthesis and simplifying parsing for computers vs. normal algebraic notation at a slight cost in the ability of humans to easily comprehend the expressions.
This evaluator works by cycling through the expression from left to right. As each token is encountered, it is checked against the list of operators. If it matches, then a check is performed for stack underflow.

If the stack has not underflowed, the operation is performed by removing the required number of operands from the top of the stack. The result is then pushed on to the stack. Operations for which order is significant (-,/,%,etc.) are processed such that the top item on the stack is treated as the right operand, and the next item down is treated as the left operand. Thus, "5,3,-" would yield 2, not -2. If the token does not match any of the known operators, the token is blindly pushed onto the stack. As a result, one can produce unexpected results. For example, the expression "5,3,grandma,+,*" would produce 15 because 5*(3+0) is how it would end up evaluated. That is, 5 would be pushed onto the stack, then 3, then "grandma". Next, + is evaluated, so 3+"grandma" is evaluated. PERL evaluates "grandma" to be numerically 0, so 3 is pushed back onto the stack. Next, the * multiplies the top two items of the stack [5][3], producing 15, which is pushed back onto the stack.

Math::Zap::Triangle module can build triangles in 3D space.

Synopsis

Example t/triangle.t

#_ Triangle ___________________________________________________________
# Test 3d triangles
# philiprbrenan@yahoo.com, 2004, Perl License
#______________________________________________________________________

use Math::Zap::Vector;
use Math::Zap::Vector2;
use Math::Zap::Triangle;
use Test::Simple tests=>25;

$t = triangle
(vector( 0, 0, 0),
vector( 0, 0, 4),
vector( 4, 0, 0),
);

$u = triangle
(vector( 0, 0, 0),
vector( 0, 1, 4),
vector( 4, 1, 0),
);

$T = triangle
(vector( 0, 1, 0),
vector( 0, 1, 1),
vector( 1, 1, 0),
);

$c = vector(1, 1, 1);

#_ Triangle ___________________________________________________________
# Distance to plane
#______________________________________________________________________

ok($t->distance($c) == 1, Distance to plane);
ok($T->distance($c) == 0, Distance to plane);
ok($t->distance(2*$c) == 2, Distance to plane);
ok($t->distanceToPlaneAlongLine(vector(0,-1,0), vector(0,1,0)) == 1, Distance to plane towards a point);
ok($T->distanceToPlaneAlongLine(vector(0,-1,0), vector(0,1,0)) == 2, Distance to plane towards a point);

#_ Triangle ___________________________________________________________
# Permute the points of a triangle
#______________________________________________________________________

ok($t->permute == $t, Permute 1);
ok($t->permute->permute == $t, Permute 2);
ok($t->permute->permute->permute == $t, Permute 3);

#_ Triangle ___________________________________________________________
# Intersection of a line with a plane defined by a triangle
#______________________________________________________________________

#ok($t->intersection($c, vector(1, -1, 1)) == vector(1, 0, 1), Intersection of line with plane);
#ok($t->intersection($c, vector(-1, -1, -1)) == vector(0, 0, 0), Intersection of line with plane);

#_ Triangle ___________________________________________________________
# Test whether a point is in front or behind a plane relative to another
# point
#______________________________________________________________________

ok($t->frontInBehind($c, vector(1, 0.5, 1)) == +1, Front);
ok($t->frontInBehind($c, vector(1, 0, 1)) == 0, In);
ok($t->frontInBehind($c, vector(1, -0.5, 1)) == -1, Behind);

#_ Triangle ___________________________________________________________
# Parallel
#______________________________________________________________________

ok($t->parallel($T) == 1, Parallel);
ok($t->parallel($u) == 0, Not Parallel);

#_ Triangle ___________________________________________________________
# Coplanar
#______________________________________________________________________

#ok($t->coplanar($t) == 1, Coplanar);
#ok($t->coplanar($u) == 0, Not coplanar);
#ok($t->coplanar($T) == 0, Not coplanar);

#_ Triangle ___________________________________________________________
# Project one triangle onto another
#______________________________________________________________________

$p = vector(0, 2, 0);
$s = $t->project($T, $p);

ok($s == triangle
(vector(0, 0, 2),
vector(0.5, 0, 2),
vector(0, 0.5, 2),
), Projection of corner 3);

#_ Triangle ___________________________________________________________
# Convert space to plane coordinates and vice versa
#______________________________________________________________________

ok($t->convertSpaceToPlane(vector(2, 2, 2)) == vector(0.5,0.5,2), Space to Plane);
ok($t->convertPlaneToSpace(vector2(0.5, 0.5)) == vector(2, 0, 2), Plane to Space);

#_ Triangle ___________________________________________________________
# Divide
#______________________________________________________________________

$it = triangle # Intersects t
(vector( 0, -1, 2),
vector( 0, 2, 2),
vector( 3, 2, 2),
);

@d = $t->divide($it);

ok($d[0] == triangle(vector(0, -1, 2), vector(0, 0, 2), vector(1, 0, 2)));
ok($d[1] == triangle(vector(0, 2, 2), vector(0, 0, 2), vector(1, 0, 2)));
ok($d[2] == triangle(vector(0, 2, 2), vector(1, 0, 2), vector(3, 2, 2)));

$it = triangle # Intersects t
(vector( 3, 2, 2),
vector( 0, 2, 2),
vector( 0, -1, 2),
);

@d = $t->divide($it);

ok($d[0] == triangle(vector(0, -1, 2), vector(0, 0, 2), vector(1, 0, 2)));
ok($d[1] == triangle(vector(3, 2, 2), vector(1, 0, 2), vector(0, 0, 2)));
ok($d[2] == triangle(vector(3, 2, 2), vector(0, 0, 2), vector(0, 2, 2)));

$it = triangle # Intersects t
(vector( 3, 2, 2),
vector( 0, -1, 2),
vector( 0, 2, 2),
);

@d = $t->divide($it);

ok($d[0] == triangle(vector(0, -1, 2), vector(1, 0, 2), vector(0, 0, 2)));
ok($d[1] == triangle(vector(3, 2, 2), vector(1, 0, 2), vector(0, 0, 2)));
ok($d[2] == triangle(vector(3, 2, 2), vector(0, 0, 2), vector(0, 2, 2)));