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1.1       root        1: .TH MATLAB 1
                      2: .CT 1 numbers
                      3: .SH NAME
                      4: matlab \(mi interactive matrix desk calculator
                      5: .SH SYNOPSIS
                      6: .B /usr/lbin/matlab
                      7: .SH DESCRIPTION
                      8: .I Matlab
                      9: manipulates complex matrices interactively.
                     10: Special cases include
                     11: real matrices and scalars.
                     12: Operations include pseudoinversion (which
                     13: is inversion for square nonsingular matrices), eigendecomposition,
                     14: various other factorizations, solution of linear equations, matrix
                     15: products (including inner and outer products), Kronecker products,
                     16: log, exponential and trigonometric functions of matrices, and rank and
                     17: condition estimation.
                     18: .PP
                     19: Variables are alphanumeric strings of at most
                     20: 4 characters.
                     21: Case is ignored.
                     22: Expressions and assignment statements are written
                     23: as in Fortran.
                     24: Multiple statements can be put on one line,
                     25: separated by either comma or semicolon; the result of a statement
                     26: is written on the standard output unless a semicolon follows the statement.
                     27: Extensions to Fortran notation include:
                     28: .PP
                     29: .I Matrix construction
                     30: from elements.
                     31: Elements in a row are separated by commas; columns are
                     32: separated by semicolons; matrices are surrounded by
                     33: .L  < >
                     34: brackets.
                     35: .PP
                     36: .I Transpose
                     37: is indicated by postfix prime
                     38: .LR ' .
                     39: .PP
                     40: .I Consecutive integers
                     41: are denoted by colons in the style 1:4 or 1:2:8 (meaning 1,3,5,7).
                     42: .L A(2:5)
                     43: is a subarray;
                     44: .L A(:,j)
                     45: is a column.
                     46: .PP
                     47: .I Identity
                     48: matrix is denoted 
                     49: .LR eye ;
                     50: its dimensions are dictated by context.
                     51: .PP
                     52: .I Reverse division
                     53: is denoted by \e .
                     54: For example,
                     55: .L x = A \e b
                     56: is roughly the same as
                     57: .LR "x = inv(A) * b" ,
                     58: except that Gaussian elimination, if applicable, is used to compute
                     59: .IR x .
                     60: .PP
                     61: Some
                     62: .I matlab
                     63: commands:
                     64: .TP
                     65: .B help
                     66: .PD0
                     67: .TP
                     68: .BI help " word"
                     69: List commands and functions, or specific information about a
                     70: .IR word :
                     71: .IP
                     72: .ft 5
                     73: .nf
                     74: ABS   ANS   ATAN  BASE  CHAR  CHOL  CHOP  CLEA  COND  CONJ  COS 
                     75: DET   DIAG  DIAR  DISP  EDIT  EIG   ELSE  END   EPS   EXEC  EXIT
                     76: EXP   EYE   FILE  FLOP  FLPS  FOR   FUN   HESS  HILB  IF    IMAG
                     77: INV   KRON  LINE  LOAD  LOG   LONG  LU    MACR  MAGI  NORM  ONES
                     78: ORTH  PINV  PLOT  POLY  PRIN  PROD  QR    RAND  RANK  RCON  RAT 
                     79: REAL  RETU  RREF  ROOT  ROUN  SAVE  SCHU  SHOR  SEMI  SIN   SIZE
                     80: SQRT  STOP  SUM   SVD   TRIL  TRIU  USER  WHAT  WHIL  WHO   WHY 
                     81: .fi
                     82: .TP
                     83: .BI save(' file ')
                     84: .TP
                     85: .BI save(' file \fR[\fB, var \fR]...\fB')
                     86: Save all current variables,
                     87: or just the designated variables in
                     88: .I file.
                     89: .TP
                     90: .BI load(' file ')
                     91: Restore saved variables.
                     92: .TP
                     93: .BI exec(' file ')
                     94: Execute the commands in
                     95: .I file
                     96: before reading more commands from the standard input.
                     97: .PD
                     98: .PP
                     99: .I Matlab
                    100: can be called as a subroutine.
                    101: For details, see the reference or
                    102: type
                    103: .LR "help user" .
                    104: .SH FILES
                    105: .F /usr/lib/mathelp.dac
                    106: .br
                    107: .F /usr/lib/mathelp.idx
                    108: .SH "SEE ALSO"
                    109: Cleve Moler,
                    110: .I MATLAB User's Guide,
                    111: Technical Report CS81\-1 (Revised), Dept.
                    112: of Computer Science, University of New Mexico, 1982.
                    113: (Available in troff form with the Matlab source.)

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