什么叫做有理數(shù),絕對(duì)值,相反數(shù)?

數(shù)學(xué)人氣：505 ℃時(shí)間：2019-12-23 10:12:34

優(yōu)質(zhì)解答

有理數(shù):整數(shù)和分?jǐn)?shù)統(tǒng)稱為有理數(shù),即整數(shù)是有理數(shù),分?jǐn)?shù)也是有理數(shù),除此之外的數(shù)就不是.絕對(duì)值:一個(gè)正數(shù)的絕對(duì)值是它本身,一個(gè)負(fù)數(shù)的絕對(duì)值是它的相反數(shù)；零的絕對(duì)值是零.從數(shù)軸上看,一個(gè)數(shù)的絕對(duì)值就是表示這個(gè)數(shù)的點(diǎn)...