Unless f(x) is defined somewhere else, it doesn’t have an answer.
This is the equation for a Fourier Transform where you take a graph of f(x) and change its equation (which might be very complicated or only valid over certain domains) into one made of sin and cos.
And unless f(x) is simple, it’s very likely that the full equation will have infinite terms, so the password will include summation symbols.
We do these all the time in physics, they’re pretty useful.

@Jdrawer, Yeah, that’s true. It’s understandable from context but it should really be phrased something like “Write the result of a Fourier Transform of f(x) = *whatever*”

Free wifi at my place. Enter the password 5a36dfdc17aa55bc46134991dc and you can download whatever you want. Unlimited internet at my place. I will let you try and find out where that is.

Unless f(x) is defined somewhere else, it doesn’t have an answer. This is the equation for a Fourier Transform where you take a graph of f(x) and change its equation (which might be very complicated or only valid over certain domains) into one made of sin and cos. And unless f(x) is simple, it’s very likely that the full equation will have infinite terms, so the password will include summation symbols. We do these all the time in physics, they’re pretty useful.