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# Tag Info

If your frequency increase linearly, then you have a chirp signal with linearly increasing frequency. https://en.wikipedia.org/wiki/Chirp_spectrum There is a closed-form solution for the Fourier transform. I'm not sure how that will help you. Why not pick a sampling frequency $\omega_s \gt 2 \omega_{max}$ Since your highest frequency is $\omega_{max}$, ...