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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Deepak singh 1
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one Ph.D. scholar who teaches me is saying that it's not a function. how can I prove or show him it is indeed a function.
he is saying that we can't formulate a function that's why it's not a function.
clearly f is defined on no. of terms after decimal expansion. √2 is an irrational number means non terminating non repeating , So function will be well defined.
first of all understand mapping , then check definition of function , then you will get yourself .
Have you studied subject Metric Space ? You will come across about this function in metric space ..