f(x) = 1 if x is rational
f(x) = 0 if x is irrational
But there is no specific question about this function. It is a well defined function whose domain is the real numbers and whose codomain consists of the two values, 0 and 1.
It is a function with infinitely many discontinuities, and an integral which is 0.
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It is not possible to answer the question because the units used for 4.746 are undefined. It should be obvious to anybody that the answer for 4.746 feet will be very different to that for 4.746 miles, for example.
60. How can anybody in the whole world not be able to answer that? If someone was able to use a computer to type the question how can that not answer a basic question like that. I'll not figure people out.I just don't get it. @Angelo212: What an arrogant a55hole you are. I can use a computer, I fix PC's and smartphones for a living, it doesn't mean I have to be a smart-a55 like you. Numbers confuse me and always have since grade school when my teacher used to beat me for getting my numbers mixed up. I guess that feeling has stuck with me.
The answer depends on the units used for 24000. It should be obvious to anybody that the answers for 24000 ounces and 24000 grams will be very different.
The answer depends on the units used for 0012. It should be clear to anybody that 0012 kilometres converted to centimetre will be different from 0012 micrometres!
The answer depends on 0.205 what. It should be blindingly obvious to anybody that the answers for 0.205 millimetres and 0.205 micrometres, for example, will be very different.