Solved
@januarymayers wrote:
I'm trying to solve for f in an equation. All the variables in that equation are previously defined. but I can get the find function to work. this is very confusing. Can somebody let me know what is wrong with my work please? thanks !
You need to provide an initial guess for f. Put this just before the Given keyword. You could use f := 1N here for example.
However, in this instance the use of Find is unnecessary; just divide the LHS by -L.
Alan
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