This worksheet demonstrates the use of Tolerances and Units in Maple. I wish I had this available when I was taking University Physics, since it would have saved a crap load of time during lab assignments. with( Tolerances ): with( Units ): Indicate the default outputs for unit calculations UseSystem( SI ); Some measurements to play with meas1 := 0.3145 &+- 0.0001 * Unit(m); meas2 := 0.2231 &+- 0.0001 * Unit(m); meas3 := 0.4122 &+- 0.0003 * Unit(um);

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meas1 + meas2 + meas3;

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sqrt( meas1^2 + meas2^2 + meas3^2 );

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meas1 * meas2;

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Let's see if we can simplify Joules per second to Watts. A := 100 * Unit(J); B := 10 * Unit(sec); C := A / B;

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