f(x)=\( \Large \frac{1}{x^{2}} \) and g (x)=\( \Large e^{-9x} \) then (f o g) (x) is

A) \( \Large \frac{1}{e^{18x}} \)

B) \( \Large \frac{1}{e^{-18x}} \)

C) \( \Large \frac{1}{e^{-18x^{2}}} \)

D) \( \Large \frac{1}{e^{18x^{2}}} \)

Correct answer:
B) \( \Large \frac{1}{e^{-18x}} \)



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