I know this is outside of the normal topics discussed on this site but I felt a serious need inform others about hidden functionality on the Texas Instruments TI-89.
Recently in my math class I was required to use the log function on my TI-89 Titanium. I couldn’t find it except by using the catalog. I read the manual and searched on the internet, I couldn’t find a better method, I in fact fount a lot of worse methods. So sitting in class I started pushing the alternate function keys and pressing all the keys without their alternate function listed. The calculator does in fact have a quick key for the Log function. Diamond & 7
Just one more example of the cryptic input for the TI-89. Shame on Texas Instruments.
sweet lord thank you. i
Thank you soooooooo much!
Thank you sooooo much. You do not believe how troubling this was for me.
Awesome find! Been searching online for this shortcut, glad someone found an easier way than scrolling through the catalog
I pressed diamond & 7 for log function. But I am not able to get it in TI 89. when I checked it using diamond EE, 7 has been assigned to some other KBDPRGM. How can I set it to log?
I have found also more like hidden key shortcuts if you press
DIAMOND & EE key (next to the number 4)
this helped a ton! just another way to find it, a little annoying but always certain.
http://www.wisc-online.com/objects/ViewObject.aspx?ID=eng13204
i am very thankful you found this! To get by this problem i found the following instructions that have worked for me for a while, it actually is pretty useful for a quick log function for non base 10 stuff: make a function that does the log base anything of anything. try this: define Logg(a,b)=ln(b)/ln(a) or you could do ln(b)/ln(a)-> Logg(a,b) (ps the ‘->’ is the store button on your calculator. I think define is f4 or something, if you can’t find it look in your catalogue)
Thank you so much Diamond and 7 is just what I needed to know!!!
Thank you!!!!!!! This was driving me crazy!!!
I knew there had to be another way!!!! geeeeeeez!!!! lol! Thank you!!!!
God bless you, sir.
Yes! God Bless you!!! Even over a year later after your post… I thank God I found it!!!
Thanks man… I was getting so tired of using ln(?)/ln(10) over and over again.
You Rock!! Thank you!! I was trying to figure out how to do these problems!!
Bless you sir, bless you!
thanks a lot!!!
THANKS!
Thank you soooo much! God bless you!
THANK YOU I LOVE YOU SO MUCH
THANK YOU SO MUCH FOR THIS! I was typing in LOG with the alpha key rather than go through the catalog. This makes my life so much easier as I needed the Log to find pH in chem class.
God Bless you you help me so much !!!THANKS A LOTTTTTTTTTTTTTTTTTTTT
THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thanks!!! it has releived alot of headaches!
Thank you! I’ve have had my TI-89 Titanium for six years and had no idea you can get log without having to go into the catalog.
It really works. You’ve saved my day. Thank you so much for sharing, we really apreciate your kindness.
This is not so on the TI-89 just the TI-89 Titanium it would seem.
i need help how do i type in Log1200=x on my ti 89 titanium???
This was so helpful! I scavenged through so many websites and this saved me the day before my midterm. THANKYOOOOU!
THANK YOU for posting this! My brain hurt trying to find this in the catalog each time.
I happen to press diamond 7 and it does not work for me. Help?
Yo thanks this shit is beast fuck yeah you’re so sick the man bromanseph
fuck that shit was pissin me so off but saved day super cool man
To calculate log base 2 of a number type log(number,2)
Awesome! Thanks!
THANKS A LOT.
Thank you
Thank you!
ohhh wow! thanks a bunch! was raging last night just to find this button
most useful blog on the internet award goes to…..*opens envelope suspensefully* You! thanks for posting
press (diamond) EE, there are shortcuts for the TI89. ie: (diamond then division key for factorial) (can’t live without that one!). diamond EE will bring you to the variety of commonly or not so commonly used shortcuts. they seem to be interchangeable between the two 89′s. both have a menu under the same (diamond) EE. diamond 7, however, is the titanium feature. check the individual menus
Thank you for sharing! You rock!
you just saved my life good sir.
THANK YOU VERY MUCH ANDTHANK YOU GOD!!!!!!!! WONDERFUL WORK MY GOOD SIR!!!
God bless you for sharing this! I bought this new Titanium a day before my Math test (not a very smart move) and I was trying to figure it out… Thank you! thank you!
ASDFGHJK THANK YOU!
Oh lordie thank you! I was falling behind in class because I couldn’t find this function for homework
I love you so much, WTF Ti morons
I have a ti-89 titanium and diamond 7 doesn’t work on mine! Please help!
Press [Diamond] and then [EE] to see a full layout of keys that are used with the diamond key. It should be on there. On my TI-89 titanium the [Diamond] key then the [7] key brings up log(
this is beautiful omg thank you so much
I jizzed in my pants! Thanks!
What a time-saver! Thanks a lot, you rock!