Yes I have been "dead" for a while, I am back! I was learning about logarithms and on the test it threw this equation at me.

\(y=-\ln x +2\)

What on earth is LN? Or is it 1n? Why didn't my book tell me about this?

On a side note, what is the proper way to pronounce logarithm?

OfficialBubbleTanks
Jan 12, 2018

#1**+3 **

ln is the 'natural logarithm' based on e LOG is the base 10 logarithm.

ElectricPavlov
Jan 12, 2018

#2**+2 **

okay...but what is its equation as a logarithm?

nevermind im dumb its log base e x

OfficialBubbleTanks
Jan 12, 2018

#3**+3 **

Not sure what you are asking, but:

-y = -ln x + 2

2+y = ln x

e^(2+y) = e^(ln x)

e^(2+y) = x

ElectricPavlov
Jan 12, 2018

#4**+3 **

you are amazing and my book is lazy lol

thanks for telling me what ln is

also do you know what the proper way to pronounce logarithm is? i pronounce it log like in...well..log, but my friends say loge like in go,boat, whatever...

OfficialBubbleTanks
Jan 12, 2018

#5**+2 **

I've never heard it pronounced any other way than log rhymes with 'bog' 'dog' 'hog' 'cog' 'fog' etc......

ElectricPavlov
Jan 12, 2018

#6**+3 **

This is not an equation.....it's a graph of the natural log function reflected about the x axis and shifted up 2 units

Here's a graph of the parent function and this one :

https://www.desmos.com/calculator/0s8sewqwps

CPhill
Jan 12, 2018

#7**+1 **

Well I wasn't really looking for a solution, I just wanted to know what LN was...thanks anyway!

OfficialBubbleTanks
Jan 15, 2018