JEE MATHEMATICS MCQ: FUNCTIONS

1 Easy

1 of 1

Application +4 | -1

Let

f(x)=\ln \left(x^2+a x+1\right)

. If

f(x)

is defined

\forall \,x \in R

, then the number of integers in the range of '

a

' is:

View answer and explanation

Correct option: B

Option B is correct because the condition

x^2 + ax + 1 > 0

for all

x

implies

a^2 - 4 < 0

, leading to 3 integers in the range of 'a'.

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