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Values of x for which f\left ( x \right ) is positive is/ are

 

 

Option: 1

\left ( -\infty ,-2 \right )\cup \left ( 0,3 \right )

 

 


Option: 2

\left ( -2 ,0\right )\cup \left ( 3,\infty \right )


Option: 3

\left ( -\infty ,-2\right )\cup \left ( 0,3 \right )


Option: 4

None of these


Answers (1)

best_answer

f(x) is positive
\Rightarrow  Solution of inequation {f(x)}>0
So, we draw y=f(x)  and y=0(x-axis )
Solution is x- values for which y=f(x) is higher
than y=0(x-axis)
Clearly, such values are \left ( -\infty ,-2 \right )\cup \left ( 0,3 \right )

Posted by

Nehul

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