Let g be the function defined on the set of all real numbers
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Let g be the function defined on the set of all real numbers by
(继续) g(x)=1 if x is rational and g(x)=e^x if x is irrational.Then the set of numbers at which g is continuous is
(a)the empty set
(b){0}
(c){1}
(d)the set of rational numbers
(e)the set of irrational numbers
为什么选b?
(继续) g(x)=1 if x is rational and g(x)=e^x if x is irrational.Then the set of numbers at which g is continuous is
(a)the empty set
(b){0}
(c){1}
(d)the set of rational numbers
(e)the set of irrational numbers
为什么选b?
x=0,e^x=1,此时函数连续
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