Basic arithmetic operations with Maple3+4;

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54/6;

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12/5;

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evalf(12/5);

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3*(4-7);

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A common mistake: To forget the ";" at the end of each statement.Here we assign to the variable VAR the expression 2x+4yVAR;

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VAR:=2*x+4*y;

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VAR;

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y:=65;

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VAR;

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x:=5;

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VAR;

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To add maple prompts, one can use crtl + j (below the line) or crtl +k (above the line). To add text, crt+tMaple's memory: It is important when an assigment is made (as oppossed to where)?intint(5*x,x);

Error, (in int) wrong number (or type) of arguments

currentdir();

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currentdir("/mt/centerport/home/moira/www/wise/wise2005/classes");

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currentdir();

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read("turtle.txt"):"ResetTurtle();

Warning, premature end of input, use <Shift> + <Enter> to avoid this message.

TurtleCmd('FRF');

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SetTurtleAngle(45);TurtleCmd('FRF');

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TurtleCmd('FRFBLF');

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ResetTurtle(); SetInitialTurtleHeading(30); TurtleCmd(F);

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EXERCISE: Create an arbitrary sequence of F, B, R, and L, with 8 letters and use it as Turtle Command.myseq:='FFFFFFFFFRF';

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TurtleCmd(myseq);

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EXERCISE: Draw 1. A letter "L".2. Two squares with a common edge.3. A rectangle.4. A "+" sign.SetTurtleAngle(120);TurtleCmd('FRF');In order to "glue" sequences of letters together we use the maple comand "cat". EXAMPLEcat('F',RR);

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EXERCISE: Draw1. A triangle.2. A decagon3. A polygon of 20 sides4. A circle5. Two polygons with a common edge.An interesting picture from the book.SetTurtleAngle(30);TurtleCmd(cat(seq(cat(R,seq(FR,i=1..12)),j=1..12)));With the above intructions, change some of the parameters (angle, number of iterations for i, or j) and try to understand the results.EXERCISE: Draw the figures corresponding to the sequences FRSFR and FFRF and compare them. Can you deduce what S does? Draw the figures corresponding to the sequences FRGFR and FRFF and compare them. Can you deduce what G does?TurtleCmd(FRGFR);TurtleCmd(FRFF);