[英]What is the Small “e” in Scientific Notation / Double in Matlab
when I calculate a very small number, matlab gives 当我计算一个非常小的数字时,matlab给出
1.12345e-15
What is this? 1.12345e-15
这是什么?
I can interpret it as 1.12345*10^(-15) or its 1.12345*e^(-15) I am in very hurry. 我可以将其解释为1.12345 * 10 ^(-15)或其1.12345 * e ^(-15),我非常着急。 Sorry for the stupid question.
很抱歉这个愚蠢的问题。
e represents exponential. e代表指数。 Its the scientific notation of writing numbers.
它是书写数字的科学表示法 。
The base is 10. For example: 底数是10。例如:
1e2 =100
1e-2= 0.01
e represents scientific notation as Rahul said but it is base 10, not base e. 如Rahul所说,e代表科学计数法,但以10为底,而不是e。
Run the following code to confirm. 运行以下代码进行确认。
1e1
It gives you 它给你
ans = 10
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