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lim(x->0)(sin(picos^2x)/(x^2)) is equal ...

`lim_(x->0)(sin(picos^2x)/(x^2))` is equal to

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The correct Answer is:
D
`underset(xto0)lim(sin(picos^(2)x))/(x^(2))=underset(xto0)lim(sin(pi-pisin^(2)x))/(x^(2))`
`=underset(xto0)lim(sin(pisin^(2)x))/(pisin^(2)x)xx(pisin^(2)x)/(x^(2))=pi`
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