Tahj8aunLoa
contestada

How would you "remove the discontinuity" of f? In other words, how would you define
f(5) in order to make f continuous at 5?

f(x) = [(x^2 -2x -15)/x-5]

Respuesta :

meerkat18
The numerator of this function given may be factored out as follows,
                     x² - 2x - 15 = (x - 5)(x + 3)
Given that the expression x - 5 appears in both the numerator and the denominator, we can cancel them and the new function becomes,
                              f(x) = x + 3
which is continuous at 5. 

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