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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Vishal saini
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please show me the details for differentiating lxl
|x| is not differentiable that why we are using d(|x|) /dx=x/|x|
okay,last doubt, how x/lxl ?
?????
because if x<1 then this will be -1 and if x>1 then this will be 1