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You are watching: How to use log base on ti-89


CATALOG>search for logor ln(x)/ln(the base you want), like log(25) is really ln(25)/ln(10) (Change of Base rule)etc etc
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.
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
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And why I"m using a $100 calculator to find pH levels is beyond me.
Originally posted by: TheoPetro
if youre in calc 3 (multivariable calc) you should have known log operations for years now
the TI89 is a great calculator, they should seriously make a TI83 with the same UI, then it"ll be great
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
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
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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 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.

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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?
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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.
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