Maple

The program is started by
maple

It is ended by
quit

Help
?topic - give you help on topic
?topic,subtopic - help on a subtopic
?index - help index

There are three books about Maple somewhere around in the department.

Points to remember

• ;  All expessions must end with ; followed by return.
• :  If you do not want any output, used : instead.
• *  All multiplications must be explicitly indicated by *
• "  The last results is retrieved by ". "" is the second last, """ the third last.
• () You must use parenthesis around negative numbers in experssions, e.g. -5*(-2)
• := assignement is done by :=
• [] parts of an array are indexed by array[1]; arrays are defined using [].
• {} sets are defined using {}
• assign(solution) assigns the values of solution to the corresponding unknowns (p.17)
• unassignment is done by x:='x';
• subs(var=replacement, experssion)
• 10 digits is the standard presision; it is changed by Digits=20;
• .. ranges are given by 0.1..1.5

Unusual function names

• evalf(experssion, digits) - evaluate an experssion with a given number of digits
• fsolve - numerical solve
• iquo(x,y) - integer division
• irem(x,y) - integer remainder
• plot(sin(1/x),x=0.1..1.5);
• interface(plotsetup=psotscript, plotoutput=file); - write a plot to file file in postscript.

Examples

eqn:={1.2 x - 1.9 y + .5 z = 0, -1.5 x + .3 y + 2.0 z = -.3, -.9 x + .1 y - .1 z = 2.8}
solve(eqn,{x,y,z});
     {y = -2.556319862, x = -3.157924907, z = -2.134995701}