# What does E mean in this format?

by Tmp
Tags: format
 P: 4 I'm just playing around with some stuff in excel. I asked it to create a Polynomial trend line to the order 6 adn it came back wiht this... Y = -9E-19x6 + 2E-14x5 - 2E-10x4 + 1E-06x3 - 0.0027x2 + 3.5222x - 1656.5 I just want to write that as a formula, but what's the E? I've seen it used to represent x10# before but that dosent seem to fit? Can someone rewrite that in a format that works in excel? eg.. = (10^-9)-(19*x^6).....
 P: 474 It is 10^x, in this case it means that the coeficients in x^3 and higher are zero.
 P: 4 I kind of get what your saying but I still can't see how I can write that as a formula that will work in excel if someone can do it I'm sure I'll be able to make sense of it
P: 474

## What does E mean in this format?

assuming that x is a cell A1 then you can use E directly in any number

= -9E-19*power(A1,6) + 2E-14*power(A1,5) - 2E-10*power(A1,4) + 1E-06*power(A1,3) - 0.0027*power(A1,2) + 3.5222*A1- 1656.5

Although because the higher terms are so small this is really just

= 0.0027*A1*A1 + 3.5222*A1- 1656.5
PF Patron
Thanks
Emeritus
P: 38,395
[QUOTE=Tmp;3081282]I'm just playing around with some stuff in excel.

I asked it to create a Polynomial trend line to the order 6 adn it came back wiht this...

Y = -9E-19x6 + 2E-14x5 - 2E-10x4 + 1E-06x3 - 0.0027x2 + 3.5222x - 1656.5

$-9E-19$ is "calculator speak" for $-9 \times 10^{-19}= -0.0000000000000000009$ (18 "0"s and "9" after the decimal point.)

Similarly
$$2E-14= 2\times 10^{-14}= .00000000000002$$

$$-2 E-10= -2\times 10^{-10}= -.0000000002$$

$$1E-06= 10^{-6}= 0.000001$$

 I just want to write that as a formula, but what's the E? I've seen it used to represent x10# before but that dosent seem to fit? Can someone rewrite that in a format that works in excel? eg.. = (10^-9)-(19*x^6).....

 Related Discussions Computers 10 Advanced Physics Homework 1 General Discussion 6 Computing & Technology 0 General Discussion 3