I want to put together an equation graphic with a live calculation in it. If I use HoldForm, it retains the formatting I want, but I don't know how to ReleaseHold (or whatever is required) to insert a live calculation.
Here is an example:
miles = 3 Sqrt[Pi/4/.02 35 .001]; Show[Graphics[ Text[Style[ HoldForm[ Subscript[G, 3 \[Sigma]] = 3 Sqrt[Pi/4/\[Zeta] Subscript[f, n] Subscript[A, in]] = 3 Sqrt[Pi/4/.02 35 .011] = 3.517 g' s], Large, FormatType -> TraditionalForm]], ImageSize -> Large]]
This does exactly what I want to do except that I have to hard code the value into the final typeset whereas I would prefer to insert the value from the variable "miles."
Thanks for your help!