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lim(xto0)(1-cos(x^(2)))/(x^(3)(4^(x)-1))...

`lim_(xto0)(1-cos(x^(2)))/(x^(3)(4^(x)-1))` is equal to:

A

(a) `1/2ln2`

B

(b) `ln2`

C

(c) `ln4`

D

(d) `1-1/2ln((e^(2))/4)`

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