If f(x) = $\dfrac{1}{x^{2}}$ and g(x) = $e^{-9x}$then (fog ) (x ) is

For Competitive Exams

If f(x) = $\dfrac{1}{x^{2}}$ and g(x) = $e^{-9x}$
then (fog ) (x ) is

$\dfrac{1}{e^{18x}}$

$\dfrac{1}{e^{-18x}}$

$\dfrac{1}{e^{-18x^{2}}}$

$\dfrac{1}{e^{18x^{2}}}$

Next Question

Standard deviation of a set of 50 observations is 6.5. If value of each observation
is increased by 5, then the standard deviation is

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