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Several built-in functions are provided: ‘`sin`’, ‘`cos`’, ‘`tan`’,
‘`asin`’, ‘`acos`’, ‘`atan`’,
‘`sinh`’, ‘`cosh`’, ‘`tanh`’,
‘`asinh`’, ‘`acosh`’, ‘`atanh`’,
‘`exp`’, ‘`ln`’, ‘`log`’,
‘`abs`’, ‘`round`’, ‘`floor`’, ‘`ceil`’, ‘`factorial`’,
‘`Gamma`’, ‘`lnGamma`’, ‘`erf`’, and ‘`erfc`’;
the function ‘`lnGamma`’ is the natural logarithm of the ‘`Gamma`’
function.

The ‘`sin`’, ‘`cos`’, and ‘`tan`’
functions require either a dimensionless argument or an argument with
dimensions of angle.

You have: sin(30 degrees) You want: Definition: 0.5 You have: sin(pi/2) You want: Definition: 1 You have: sin(3 kg) ^ Unit not dimensionless

The other functions on the list require dimensionless arguments. The inverse trigonometric functions return arguments with dimensions of angle.

The ‘`ln`’ and ‘`log`’ functions give natural log and log base
10 respectively. To obtain logs for any integer base, enter the
desired base immediately after ‘`log`’. For example, to get log
base 2 you would write ‘`log2`’ and to get log base 47 you could
write ‘`log47`’.

You have: log2(32) You want: Definition: 5 You have: log3(32) You want: Definition: 3.1546488 You have: log4(32) You want: Definition: 2.5 You have: log32(32) You want: Definition: 1 You have: log(32) You want: Definition: 1.50515 You have: log10(32) You want: Definition: 1.50515

If you wish to take roots of units, you may use the ‘`sqrt`’ or
‘`cuberoot`’ functions. These functions require that the argument
have the appropriate root. You can obtain higher roots by using
fractional exponents:

You have: sqrt(acre) You want: feet * 208.71074 / 0.0047913202 You have: (400 W/m^2 / stefanboltzmann)^(1/4) You have: Definition: 289.80882 K You have: cuberoot(hectare) ^ Unit not a root

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