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lim (2x+cos x)/x as x --> inf.

I've started out by multiplying with the conjugate.

[(2x+cos x)(2x-cos x)] / x(2x-cos x) =

=(4x^{2}-cos^{2}x)/(2x^{2}-x cos x)

But now I'm lost - any hints?

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# Homework Help: Trigonometric limits

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