Can any one explain the returned value "9.4817e+03" .

Question

mika 2014-5-21

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评论： John D'Errico 2022-12-24

Can any one tell me what's the meaning of this value because it appears frequently in matlab, what's e and can i move from this representation of that value to another

shortestPathLength =

9.4817e+03

thank you

Help is much appreciated

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SADAGOBAN A 2017-3-12

in generally e+03 means exponential base 10,here e+03 means 1000 the value for 9.4817e+03 means 9.4817*1000 and the value is 9481.7 (Note:incase of e-03 means 1/1000=0.0001)

Tracie Lin 2019-2-5

编辑：Tracie Lin 2019-2-5

Correction: e-03 = 1/1000 = 0.001

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Answer 1

Image Analyst 2014-5-21

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It's 9.4817 times 10 to the 3rd power, 9.4817 * 10^03 = 9481.7.

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Image Analyst 2014-5-21

编辑：Image Analyst 2014-5-21

By the way, the "e" stands for "exponent", which means the exponent of ten that it is.

Mahdi 2014-5-21

在 MATLAB Online 中打开

You can also change the way the numbers are shown by using format. For example:

format long

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Answer 2

GOHIL NIHAR AJITBHAI 2022-12-24

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how to write 1x10^(-2.3) or 1.e(-2.3)in matlab ?

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John D'Errico 2022-12-24

在 MATLAB Online 中打开

@GOHIL NIHAR AJITBHAI

Please don't ask a question in an answer to another question. Learn to ask a question instead, as a separate question.

What you need to understand is that 10^(-2.3) is not written as you seem to think it is. You cannot use the e notation to write that number.

format long g
10^-2.3
ans = 
       0.00501187233627272

Note that I do not need to use parens around the exponent, but sometimes it can be safer, in case you are not sure. So I could have written

10^(-2.3)
ans = 
       0.00501187233627272

In either case, you need to see that raising 10 to a fractional power is not the same thing as just shifting a decimal place, AND you cannot put a decimal point in the exponent. So this next is invalid syntax in MATLAB:

1e-2.3
Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.

Error in connector.internal.fevalMatlab

Error in connector.internal.fevalJSON

You need to use one of the two forms I showed first.

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