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![[Post New]](/templates/default/images/icon_minipost_new.gif) 12 Mar 2008 09:56:01 IST
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Caution: Radioactive Hazard |
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12 Mar 2008 10:25:26 IST
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does not exist
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12 Mar 2008 10:25:57 IST
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option d . rate if i right
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12 Mar 2008 12:16:56 IST
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Too good ! Both of you are correct.
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Caution: Radioactive Hazard |
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12 Mar 2008 12:18:48 IST
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Explanation: Right hand limit is +1 Left hand limit is -1
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12 Mar 2008 12:29:57 IST
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answer is D ...as already pointed out by others ..
it can be looked at in another way also ..
it is after all the reciprocal of derivative of |x| as the quantity x tends to zero
differentiation of |x| is |x|/x
instead here we have x/|x|
now we know |x| is not differentiable at x=0
so its derivative's limit shud not exist
which is the question
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