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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Kanika goswami 1
option 2,3,4 are correct. Check attachment
how are f and g are continuous everywhere. can you explain the continuity of f and g at other point (a,b) using formula?
we check derivative at that point only at which denominator becomes zero of rational function.....if any point at which denominator is not zero imply differentiable at that point