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);

 

>	meas1 + meas2 + meas3;

 

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

 

>	meas1 * meas2;

 

Let's see if we can simplify Joules per second to Watts. 

>	A := 100 * Unit(J); B := 10 * Unit(sec); C := A / B;