題組內容
9. Evaluate the following problems
(a) Solve the integral equation \( f(t) = \cos t + \int_{0}^{t} e^{-\tau} f(t - \tau) d\tau \) (5%)
9. Evaluate the following problems
(a) Solve the integral equation \( f(t) = \cos t + \int_{0}^{t} e^{-\tau} f(t - \tau) d\tau \) (5%)