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Find K by evaluating Limit

Find K By Evaluating Limit class=

Sagot :

Answer:

4

Step-by-step explanation:

[tex]\lim_{x \to \infty}\frac{1-cos4x}{1-cos2x}= \lim_{x \to 0} \frac{(1-cos4x)'}{(1-cos2x)'}= \lim_{x \to 0}\frac{4sin4x}{2sin2x}= \lim_{x \to 0}\frac{2*2sin2xcos2x}{sin2x}\\ = \lim_{x \to 0}4cos2x\\ =4[/tex]

{L'Hospital's rule}

I hope this helps you

:)

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