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The letter e problem

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I always see the letter e after a few decimal places as round but I don't understand what it represents. Can anyone explain what is the letter e here:
8.12342e-07

 Mar 6, 2021

4+0 Answers

 #1
avatar+115 
+1

It is to denote a super small number or a large number. 

 

In this case, 8.12342e-07 is equal to 0.000000812343

 Mar 6, 2021
 #2
avatar+37146 
0

8.12342e-07    = 8.12342 X 10-7           edited....forgot the  ' - ' sign

 Mar 6, 2021
edited by Guest  Mar 6, 2021
 #3
avatar+115 
+1

Guest, that is incorrect, As you can see, you can see the negative sign, so it is $8.12342 \cdot 10^{-7}$ instead. 

OofPirate  Mar 6, 2021
 #4
avatar+115 
+2

Wait a minute why is the guest ElectricPavlov? I am deep confusion

 

I think he might have logged out and replied and logged in again

OofPirate  Mar 8, 2021
edited by OofPirate  Mar 9, 2021

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