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If the functions f(x) and g(x) are defined on R rarr R such thatf(x)={:{(0, x in " rational "),(x, x in " irrational ") :}g(x)={:{(0, x in " irrational ") ,(x, xin" rational "):} then (f-g)(x) is |
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Answer» one-one and onto |
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