Question: How to determine at what input value a given function assumes a known value

Hey everybody,

I have what seems to me like it should be an incredibly easy question.

In Maple I have a function u(t). What I need to do now is determine the value of t at which u(t) is equal to some already-known value. It seems like it ought to be incredibly easy to do, but I really have no clue how to do this.

Any help would be greatly appreciated!

 

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