The convolution of two time domain functions h(t) and u(t) is given by $$ y(t) = \int_{-\infty}^{\infty} h(t- \tau)u(\tau)d\tau $$ Show that the Fourier Transforms Y(q), H(q) and U(q) satisfy the relation Y(q) = H(q) * U(q).
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1Welcome to Math.SE! To be able to help you better, you are asked to show what you have tried yourself to answer your question. Moreover, the way your question is currently stated suggests that this question is homework which has been copied word for word onto the site. This behaviour is discouraged and frowned upon. – Hrodelbert Apr 15 '15 at 15:01
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1Look up any book on Fourier Analysis. – JP McCarthy Apr 15 '15 at 15:54