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Class DMatrix
Class DMatrix
java.lang.Object

+DMatrix
 class DMatrix
 extends Object
A DMatrix is a 2x2 matrix; each entry is a double.

DMatrix()
 Create a new matrix with unspecified entries.

DMatrix(double, double, double, double)
 Create a new DMatrix with the given entries.

det()
 Return the determinant of this matrix.

inverse()
 Return the inverse of this matrix.

times(DMatrix)
 Multiply this matrix by another one.

times(DVector)
 Multiply this matrix by a vector on the RIGHT:
M.times(v) returns M * v.

toString()
 Convert this matrix to a String.
DMatrix
public DMatrix(double x00,
double x01,
double x10,
double x11)
 Create a new DMatrix with the given entries.
DMatrix
public DMatrix()
 Create a new matrix with unspecified entries.
times
public DMatrix times(DMatrix N)
 Multiply this matrix by another one. This is RIGHT multiplication:
M.times(N) returns M * N.
times
public DVector times(DVector v)
 Multiply this matrix by a vector on the RIGHT:
M.times(v) returns M * v.
det
public double det()
 Return the determinant of this matrix.
inverse
public DMatrix inverse()
 Return the inverse of this matrix.
toString
public String toString()
 Convert this matrix to a String.
 Overrides:
 toString in class Object
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The Geometry Center Home Page
Author: Mark Phillips
Comments to:
webmaster@geom.umn.edu
Created: Sep 16 1996 
Last modified: Sep 18 1996