Top 20 Texas Instruments TI-83 Plus Calculator Questions & Answers

You have attempted to use, edit, or delete an archived variable. For example, the expression dim(L1) produces an error if L1 is archived

If you're talking about your laptop, try to gently remove the button and clean it with a laptop cleaner. spray a bit of it on a small piece of cotton until its damp, not wet, and clean the area, and put the button back on. If it is infact something wrong with the sensor take it to a local computer store. If you're working with a mac, apple should have a solution for you.

so --what is the question? this is not a forum for dribble

sin(x)^2 sin^2 and its kkn are an unusual notation, compared with other functions. For example, you don't write log^2(x) but instead log(x)^2.

I get the same answer. Is b wrong? When I do it in Excel I get b= -2E+06, which is -1 797 322.99 rounded to the millions, in scientific notation. Let me know if you have any questions. Good luck, Paul

Could you just enter 6.0221415 × 10^23? This is within ± 0.0000010 of the actual number. Good luck. Paul An Exact Value for Avogadro Number

Sometimes these is corrosion on the contacts from the corroded batteries. Try cleaning it off with some sandpaper. Make sure to thoroughly wash your hands after or use gloves! Good luck.

What is wrong with the screen?

https://education.ti.com/en/us/products/calculators/graphing-calculators/ti-83-plus/downloads/guidebooks

Check your Memory if you have to many applications or variables it can take memory away processing power, delete the stuff you don't need.

Be careful with the order of operations. Try (ln(55)-1)/2You can never have to many parenthesis. remberr PEMDAS ln is an exponent so you want to put it inside parenthesis in oder to follow the Order of operations.

Make sure Z and Y are not defined as a variable in the flash memory, use the command to CLRVAR: Z,Y in your program.

Connect it to a computer with TI Connect installed. Run TI connect and open the Updates TAB. Update OS. Of course you must be connected to the Internet. Or use an IO cable to connect it to a similar calculator and send the OS from the 2nd machine to yours. Read about the procedure in the Manual.

Hmmm. Could you give more details? Are you wanting to find a percentage? If so, here's an example - 10% of 100 is 10. Multiply 100 by .10 = 10. So to find the percentage of a number, multiply the number in question by the decimal version of the percentage. 8% is .08, 15% is .15, etc. I hope that helps!

Open the Window configuration utility and change the value of the Yscl parameter. It may be too large for the range of the function you are displaying (Ymin to Ymax)

Find the scaling ratio Perimeter of first pentagon is 12*5=60 cm Scale factor (2nd/first)=140/60 =7/3 Ratio of areas varies as the square of the scale factor for the lengths Area of second / area of first =(7/3)^2 =49/9 Area of second pentagon =248 *(49/9) cm^2 Finish the calculation.

Open the Window configuration utility and change the value of the Yscl parameter. It may be too large for the range of the function you are displaying (Ymin to Ymax)

You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff. If this doesn't fix it, please reply to this post and tell us what you're trying to do when you get this error.

Hello; TI is not my favorite. The calcylater is for keeping tabs on yjr number of batteries used in a given time. Kidding!. Make sure,you probably alreay have, the batteries are installed correctly. No offense, It happens. The negative (flat) of the battery always goes against the spring contact. As you put the batts in, rotate each one several times to ensure it is seated and making good contac. Make sure the device is off when messing with the batteries.all batteries should be new or at least in same condition. If there is a bad one it will try to balabce and affect the others.. Look for a reset pinhole, Usual place is on the back. A small paper clip placed in this hole and press until a ckick will may be the need. Doesn't take much pressure so take care not to Gorrila the thing. _Good Luck-Ned-

e is a mathematical constant just like pi. It's value is ~ 2.71828