Let an and bn be the Fourier series coefficients of f(t) and let o be its fundamental

Let an and bn be the Fourier series coefficients of f(t) and let ωo be its fundamental frequency. Suppose f(t) is time-scaled to give h(t) = f(α t). Express the a'n and b'n, and ω'o, of h(t) in terms of an, bn, and ωo of f(t).