How do you do Log() on a TI-89????

[FleshLight]

 

[MSCoder610]

CATALOG>search for log
or ln(x)/ln(the base you want), like log(25) is really ln(25)/ln(10) (Change of Base rule)
etc etc

 

[msparish]

or just type in log

 

[So]

type in log(

or go into the catalog and look it up

 

[FleshLight]

Thanks. They should make the Ti-89s more pH friendly.

 

[chuckywang]

ln(x)/ln(10)

Basic math.

 

[chuckywang]

Originally posted by: FleshLight
Thanks. They should make the Ti-89s more pH friendly.

The user should know properties of the log and other math functions if he/she wants to use the TI-89. Note that there is no cube root button on the TI-89. That's because the user should know a cube root is basically raising to the 1/3 power. I guess the square root is used enough that it warrants its own button.

 

[FleshLight]

Originally posted by: chuckywang

Originally posted by: FleshLight
Thanks. They should make the Ti-89s more pH friendly.

The user should know properties of the log and other math functions if he/she wants to use the TI-89. Note that there is no cube root button on the TI-89. That's because the user should know a cube root is basically raising to the 1/3 power. I guess the square root is used enough that it warrants its own button.

I'm only up to multivariable calc 🙁

And why I'm using a $100 calculator to find pH levels is beyond me.

 

[TheoPetro]

if youre in calc 3 (multivariable calc) you should have known log operations for years now

 

[FleshLight]

Originally posted by: TheoPetro
if youre in calc 3 (multivariable calc) you should have known log operations for years now

Banking concept of education FTW!

 

[Vinfinite]

the TI89 is a great calculator, they should seriously make a TI83 with the same UI, then it'll be great

 

[KevinF]

Originally posted by: Vinfinite
the TI89 is a great calculator, they should seriously make a TI83 with the same UI, then it'll be great

um... the TI89 does everything an 83 does.

 

[chuckywang]

Originally posted by: Vinfinite
the TI89 is a great calculator, they should seriously make a TI83 with the same UI, then it'll be great

How does designing a new TI-83 make the TI-89 great?

 

[Suspicious-Teach8788]

Originally posted by: chuckywang

Originally posted by: FleshLight
Thanks. They should make the Ti-89s more pH friendly.

The user should know properties of the log and other math functions if he/she wants to use the TI-89. Note that there is no cube root button on the TI-89. That's because the user should know a cube root is basically raising to the 1/3 power. I guess the square root is used enough that it warrants its own button.

pH friendly? This is like sophomore year chemistry.

Sometimes I find TI-89 users to be idiotic. WHo the hell puts their calculator on DEGREES mode. It's not that hard to do a 180/pi conversion. How about approximate and exact/auto. Hit the ~ button or put a decimal (programmers should know this) like 1. or 5. Automatically makes it a float.

Log? Use Ln.

I mean seriously, if you're good enough at math, that SAT II Math IIC should be a 30 min test tops with your TI-89.

 

[KevinF]

Originally posted by: DLeRium

Originally posted by: chuckywang

Originally posted by: FleshLight
Thanks. They should make the Ti-89s more pH friendly.

The user should know properties of the log and other math functions if he/she wants to use the TI-89. Note that there is no cube root button on the TI-89. That's because the user should know a cube root is basically raising to the 1/3 power. I guess the square root is used enough that it warrants its own button.

pH friendly? This is like sophomore year chemistry.

Sometimes I find TI-89 users to be idiotic. WHo the hell puts their calculator on DEGREES mode. It's not that hard to do a 180/pi conversion. How about approximate and exact/auto. Hit the ~ button or put a decimal (programmers should know this) like 1. or 5. Automatically makes it a float.

Log? Use Ln.

I mean seriously, if you're good enough at math, that SAT II Math IIC should be a 30 min test tops with your TI-89.

The Ti89 also has an actual degree button -- you can leave it on radian mode and then press the degree symbol whenever you need to work in degrees.

 

[scott johnson]

A number of people made comments about how a person should not use a 89 unless they know a lot of math. Do you realize that some high school algebra II courses require students to have a 89?

 

[Iron Woode]

holy necro Batman!

 

[Ruptga]

I was going to say "throw it out the window then pull out your phone and go to wolframalpha.com" but in 2006 this was probably a legitimate question.