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Substitution Method to Remove Indeterminate Form

lim x→ 0 1-co...

Question

$lim x \to 0 \frac{1 - cos x cos 2 x cos 3 x}{{sin}^{2} 2 x}$ is equal to

A

7 / 2

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B

7 / 3

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C

7 / 4

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D

7 / 5

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Solution

The correct option is B $7 / 4$
answer is C

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