underset(x to 0)"Lt" (sqrt(cosx)-root3(c...

`underset(x to 0)"Lt" (sqrt(cosx)-root3(cosx))/sinx`

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Show that underset(x to 0)"Lt" e^(-1/x) does not exits.
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underset(x to 0)"Lt" (sqrt(cosx)-root3(cosx))/sinx
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lim(x to 2)(x-sqrt(3x-2))/(x^2-4)
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