Question

Who started the Convolution theorem?

(a) Sylvestre François Lacroix

(b) Vito Volterra

(c) Pierre Simon Laplace

(d) D’Alembert

I got this question during a job interview.

This intriguing question originated from Continuous Time Convolution in chapter Time-Domain Analysis of CT Systems of Signals and Systems

Answer 1

Right choice is (d) D’Alembert

Explanation: One of the earliest uses of the convolution integral appeared in D’Alembert’s derivation of Taylor’s theorem, 1754.Sylvestre François Lacroix, has also used convolution on page 505 of his book entitled Treatise on differences and series.