Which of the following functions are continuous at x=11?
(a) \(\frac{1}{x^2+x-132}\)
(b) \(\frac{1}{x^3-7x^2-40x-44}\)
(c) \(\frac{1}{x^2-2x-143}\)
(d) \(\frac{x-11}{x^3-23x^2+143x-121}\)
The question was posed to me in unit test.
I need to ask this question from Continuity in section Complex Function Theory of Engineering Mathematics