- #1

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I was learning Matlabs where I did

sin(pi)=1.2246e-016

I'm not into how did sin(pi) go equal to 1.2246e-016 but what does

**1.2246e-016**mean ?

I googled it and someplace it wrote

*1e1=10*

3e3=3000

3e3=3000

Does this mean e3=10^3, 3e3=3*10^3 ?

- Thread starter surajkaul
- Start date

- #1

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I was learning Matlabs where I did

sin(pi)=1.2246e-016

I'm not into how did sin(pi) go equal to 1.2246e-016 but what does

I googled it and someplace it wrote

3e3=3000

Does this mean e3=10^3, 3e3=3*10^3 ?

- #2

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You're spot on. In this scenario (as with many calculators) e simply means 'exponent' or 'times ten to the power of'. It's often shortened (as in Excel) to just XeY meaning 'X times ten to the power of Y'

1.2246e-016 means 1.2246x10^-16

Sure saves writing out 0.00000000000000012246 :)

Don't be mixed up with e being the base of the natural logarithm (2.71828, it's an irrational constant, like Pi). I don't know what level of maths you're at, so if you haven't heard of e being used in this context, it's probably not something you need to worry about. If you know all about it already, ignore this.

1.2246e-016 means 1.2246x10^-16

Sure saves writing out 0.00000000000000012246 :)

Don't be mixed up with e being the base of the natural logarithm (2.71828, it's an irrational constant, like Pi). I don't know what level of maths you're at, so if you haven't heard of e being used in this context, it's probably not something you need to worry about. If you know all about it already, ignore this.

Last edited:

- #3

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But I guess it's all clear now :)

Thanks Mate

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