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Definition of Function

Let x=√3 th...

Question

Let $x = \sqrt{3}$ then what is the value of $3 x^{3} - 9 x$ .

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Solution

Given $x = \sqrt{x}$ .
Now, $3 x^{3} - 9 x$
$= 3.3 \sqrt{3} - 9 \sqrt{3}$ [ Using value of $x$ ]
$= 9 \sqrt{3} - 9 \sqrt{3}$
$= 0$ .

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Definition of Function

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