Question

Two functions are called as orthogonal if on integrating the product we get

(a) One

(b) Zero

(c) Infinity

(d) None of the mentioned

This question was posed to me during an internship interview.

I'm obligated to ask this question of Noise in chapter Signals and Spectra of Digital Communications

Answer 1

Right option is (b) Zero

To elaborate: Two functions are called as orthogonal if the integral value of integrating the product is zero.