Comandos Úteis e Simples

Seção 2.8: Os Pacotes do Maple

Session 2.8.3: Units

>

restart;

>	Digits := 5;

>	width := convert( 27.0, units, pica, cm );

>	convert( 12.0, units, inch, pica );

>

>

restart;

>	with( Units );

>	convert(0., temperature, Celsius, kelvin);

>	convert( -55., temperature, Celsius, Fahrenheit );

>	convert( -55., temperature, Fahrenheit, Celsius );

>	convert( -40., temperature, Celsius, Fahrenheit );

>	convert( -20., temperature, Celsius, Fahrenheit );

>	convert(  86., temperature, Fahrenheit, Celsius );

>	convert(  42., temperature, Celsius, Fahrenheit );

>	convert( 165., 'units', 'Hp', 'kW' );

>

restart;

>	with( Units[Natural] );

Warning, the assigned name polar now has a global binding

Warning, these protected names have been redefined and unprotected: *, +, -, /, <, <=, <>, =, Im, Re, ^, abs, arccos, arccosh, arccot, arccoth, arccsc, arccsch, arcsec, arcsech, arcsin, arcsinh, arctan, arctanh, argument, ceil, collect, combine, conjugate, convert, cos, cosh, cot, coth, csc, csch, csgn, diff, eval, evalc, evalr, exp, expand, factor, floor, frac, int, ln, log, log10, max, min, normal, root, round, sec, sech, shake, signum, simplify, sin, sinh, sqrt, surd, tan, tanh, trunc, type, verify

>	6*ft + 4.*inches;

>

restart;

>	with( Units );

>	convert( 1.0, 'units', 'M', 'km/s' );

>

1/%;

>	convert( 1.0, 'units', 'M', 'mi/s' );

>

1/%;

>

restart;

>	with(Units):

>	GetUnit(megatonne);

>

restart;

>	convert( 1., units, kg, joule, energy=true );

>

restart;

>	with( Units[Natural] ):

Warning, the assigned name polar now has a global binding

Warning, these protected names have been redefined and unprotected: *, +, -, /, <, <=, <>, =, Im, Re, ^, abs, arccos, arccosh, arccot, arccoth, arccsc, arccsch, arcsec, arcsech, arcsin, arcsinh, arctan, arctanh, argument, ceil, collect, combine, conjugate, convert, cos, cosh, cot, coth, csc, csch, csgn, diff, eval, evalc, evalr, exp, expand, factor, floor, frac, int, ln, log, log10, max, min, normal, root, round, sec, sech, shake, signum, simplify, sin, sinh, sqrt, surd, tan, tanh, trunc, type, verify

>	mass := 1.0*kg;

>	c := 3.00e8 * m/s;

>	energy := mass*c^2;

>	3.*V/V(base);

>

ln( % );

>	convert( %, units, dB );

a gain of 3 volts is a gain of 10 decibels, e.g.,

>	min( 3*m, 10*ft, 3.2*yd);

>	min( 3.*m, 10.*ft, 1.0*x*yd);

>	diff( (x^2+3*x+4)*m, x*s );

>	int( %, x*s=4..7);

>	plot( sin(x*degrees), x=0..180 );

>	floor( 9.2*s );

>	sin((tau*s)*radian/s);

>

>

>