Evaluate an Expression at Values with Units

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	Description
	Evaluate a symbolic expression or formula using a set of dimensioned values. This can be useful for checking the validity of a formula.

Load the Standard Units package.

>	$with (Units [Standard]) &colon;$

Enter a symbolic expression.

>	$x + v t + \frac{1}{2} a t^{2}$

$x + v t + \frac{1}{2} a t^{2}$

(1)

Specify the dimensioned values, and then evaluate the expression. The values can be numeric or symbolic.

>	$eval (, \{t = t ⟦s⟧, x = 100 ⟦m⟧, v = 25 ⟦\frac{m}{s}⟧, a = 3.2 ⟦\frac{m}{s^{2}}⟧\})$

$(100 + 25 t + 1.600000000 t^{2}) ⟦m⟧$

(2)

	Commands Used
	Units[Standard], eval

	See Also
	ScientificErrorAnalysis, ScientificConstants, Units, Units[Natural]

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