rational.irrational这些都是什么数啊,我知道nature是自然数,还有实数无理数什么的英语怎么说然后列个那种式子.例如 正数属于自然数属于实数.很长的最好包括全部的定义

有人可以给我解释一下RATIONAL 和IRRATIONAL NUMBER的区别吗rational number and irrational number Rational and Irrational numbers.Are there any real numbers that are both rational and irrational?Are there any real numbers that are neither?Explain your reasoning.Answer the question,not translate the sentences! the irrational rational.irrational这些都是什么数啊,我知道nature是自然数,还有实数无理数什么的英语怎么说然后列个那种式子.例如 正数属于自然数属于实数.很长的最好包括全部的定义 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 o we should have a rational brain这句话对不对 rational approach rational rotation rational什么意思? rational的意思 rational calculations什么意思 semi-rational 是什么意思 rational expression是什么意思? rational expression是什么意思 Rational Rose是什么? rational-argument是什么意思 rational function是什么意思呢~ rational perspective是什么意思