20 Most Recent Texas Instruments TI-89 Calculator - Page 2 Questions & Answers

See image below

For resolving this equation type solve(abs(4x-5)=abs(3x-23),x). See captured image

i do not think it can

Error Dimension Mismatch: Two or more arguments must be of the same dimension. For example, [1,2]+[1,2,3] is a dimension mismatch because the matrices contain a different number of elements.

You can use pen and paper and write f(x)=y, then
y=(X^2+3)/(3X^2) and isolate the variable X.
The solutions are
X=+ /- 1/Square root of (Y-1/3) with the proviso that Y-1/3 strictly positive.

If you want to use the calculator

1. Go to the Home screen.
2. Press MODE F2 and scroll to set EXACT/APPROX to Exact or AUTO
3. Use keyboard to type solve( or Press F2:Algebra and select 1:solve(
4. Complete the command as follows:
5. solve ( 3Y*X^2-X^2-3=0, X)
6. Press ENTER

The graph of y=22log(10) is a straight line, though it should go through (0,0) and (1,22). Log(10) is a constant 1, so the function is simply y=22x .If you want "twenty-two times log-base-ten of x", write it as 22*log(x) .

See captured image below

You have to reset
• Press [2nd] [6] (MEM) [F1] [ENTER(RAM)]
• Select 1:ALL RAM
• Press [ENTER]
• Press [ENTER]
NOTE- erased half of my programs(I think only the ones in the main directory)

Left + right + 2nd + on all at the same time, it would go back

Sometimes a whack on the head helps, I mean device. But no guaranty.

hi: press the green diamion key then press the x key and you will get the e^ for it. to get 2.718281828 - press green diamion key than press the x key enter 1 press enter and you will get that value for it hope this helps.

Please don't get your hopes up, but perhaps something in the following few suggestions will work:

For the TI-89 Family, TI-92 Family, and Voyage™ 200:

1. Adjust the contrast by pressing and releasing the Diamond Key key followed by pressing and releasing the [+] key; repeat as necessary. To adjust or lighten the display, use the [-] key.
2. Users of the TI-89 Titanium or Voyage 200 should see the following case before performing the following reset procedure to prevent the loss of valuable Apps.
   On the TI-92 family or Voyage 200, hold the [2nd] key and the [hand] key, then press and release the [on] key. On the TI-89 family, press and hold the [2nd] key, left arrow, and right arrow; then press and release the [on] key. This should reinitialize the operating system, in which you should see a progress bar filling on the screen.
3. Remove one of the AAA or AA batteries. Press and hold the [APPS] key, and while holding the [APPS] key, replace the battery and turn the unit on. TI-89, 92 Plus, or Voyage 200 users should see "Press I to install code...", and should press the [9] key. The calculator should then say, "Waiting to receive...". TI-89 Titanium users should see "Waiting to receive..." or "Waiting to received OS...". You will need to restore the calculator's operating system.

To reinstall the Calculator's operating system, take a look at the following TI site.

http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetNumber=12089

I would hunt around on the TI knowledge base to see if there are some more useful suggestions if nothing above works. If I find any more info that could be useful I will post it.

Just open the Y= equation editor and enter your equation. Use X for T. Make sure the angle unit is in radians.

Black-Screen/Black-Pixel Fix for TI-Calculator

This will erase all memory and reset defaults.

1. Remove 1 AAA Battery
2. Press and Hold 'ON' for 30 seconds
3. Replace AAA Battery
4. Adjust Contrast to appropriate level

If this fails, try again with ALL Batteries removed including
the backup Lithium Battery.

If all else fails, try the following reset procedure:

1. Remove ALL Batteries (inc. Backup)
2. Let Calculator sit with no batteries for 2~4 hours.
3. Hold 'ON' for 30 seconds.
4. Replace all the batteries (May be good idea to use new batteries
just in case old ones were dead)
5. Turn on Calculator
6. Change Contrast to appropriate level

- Remember to use correct batteries or calculator may not work. The
correct batteries are Alkaline, Rechargable Batteries are TOO WEAK,
Heavy Duty batteries are TOO STRONG.

What's that?

Use the cube root function in the MATH menu.

The last closing parenthesis is often not necessary. You can also enter it using the catalog.

It would be very unusual for a linear function to model data exactly (or a non-linear function for that matter). I must not understand your question, so would need more info before I could even consider commenting about a solution.