The points at which the function f(x) = x + 1 x^2 + x - 12 is dis… - Vidyadip

MCQ

The points at which the function $f(x) = \frac{{x + 1}}{{{x^2} + x - 12}}$ is discontinuous, are

A
$-3, 4$
✓
$3, -4$
C
$-1,-3, 4$
D
$-1, 3, 4$

✓

Answer

Correct option: B.

$3, -4$

b
(b)$f(x) = \frac{{x + 1}}{{(x - 3)\,(x + 4)}}$. Hence the points are $3, -4.$

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