關(guān)于1.5萬億用科學(xué)計(jì)數(shù)法表示,科學(xué)計(jì)數(shù)法e表示什么這個問題很多朋友還不知道,今天小六來為大家解答以上的問題,現(xiàn)在讓我們一起來看看吧!
1、Most calculators and many computer programs present very large and very small results in scientific notation. Because superscripted exponents like 1011 cannot always be conveniently displayed, the letter E or e is often used to represent times ten raised to the power of (which would be written as × 10b) and is followed by the value of the exponent; in other words, for any two real numbers a and b, the usage of aEb would indicate a value of a × 10b. Note that in this usage the character e is not related to the mathematical constant e or the exponential function exp() (a confusion that is less likely with capital E); and though it stands for exponent, the notation is usually referred to as (scientific) E notation or (scientific) e notation, rather than (scientific) exponential notation (though the latter also occurs). The use of this notation is not encouraged in publications.【翻譯:大多數(shù)計(jì)算器及計(jì)算機(jī)程序用科學(xué)記數(shù)法顯示非常大和非常小的結(jié)果。
2、因?yàn)橹笖?shù)上標(biāo)(例如1011)在屏幕上顯示不方便,字母E或e通常是用來代表的十次冪(寫作“×10b”),E或e之后的數(shù)字是它的指數(shù);換句話說,任何兩實(shí)數(shù)a和b(b應(yīng)為整數(shù)),“aEb”所表示的值是a × 10b。
3、注意,這種用法中字母e不是數(shù)學(xué)常數(shù)e,也不是指數(shù)函數(shù)exp()(采用用大寫字母E顯示可以更大程度地避免誤解);盡管它也表示指數(shù),但這個符號通常被稱為(科學(xué)記數(shù)法)E或e符號,而不是指數(shù)中的底數(shù)符號(盡管后者也會出現(xiàn))。
4、在正式的出版物中盡量不要使用這種顯示方法。
5、】注意科學(xué)記數(shù)法中的e或E與數(shù)學(xué)常數(shù)e或函數(shù)exp()沒有關(guān)系。
6、這種寫法是因?yàn)橐恍┯?jì)算機(jī)程序中不方便寫上標(biāo)而產(chǎn)生的,在正式出版物中不應(yīng)當(dāng)使用這種寫法。
7、我國國家標(biāo)準(zhǔn)中科學(xué)記數(shù)法均用a ×10b的形式表示,而不是aEb(參見GB3101-1993,GBT15835-2011,GBT8170-2008)。
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