Mon May 28, 2012 By: Yash Pinto
dear sir, i may be asking a silly question.  for multiple choice questions, how do i get a quick answer for points of discontinuity like the function f(x) = 4 - x sq

points of discontinuity

Expert Reply
Tue May 29, 2012
For quick answer, just put the denominator equals to 0, you get
4x - x3 = 0
x(4 - x2) = 0
x = 0, 2, -2
Thus the function is not defined at these points and hence discountinuos.

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