Question about Texas Instruments TI-89 Calculator

For example when I input:

d(x^2,x)

it outputs

"2."

instead of the expected 2x

also, if I integrate:

S(x,x)

it outputs

".5"

instead of x^2/2

What you do is go to the home screen and hit f6 and hit 'clear a-z' that will clear all variables from being numeric variables.

Posted on Sep 20, 2008

Probably a value stored in the "x" variable (guessing x=1)

try the following, type or look for the "Define" function: Define X=X and see what happens, also try Cleaning the variables "F6>cleanup, etc" as a last resource do factory reset, but first archive your important files (not very recomended as some of them may contain the variable's value and just not solve this)

Posted on Sep 03, 2008

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Posted on Jan 02, 2017

You input double parenthesis in the order that you see them in the written equation. For example, ((2+ 5)*3)+6, you would enter <left parenthesis> <left parenthesis> 2 + 5 <right parenthesis> * 3 <left parenthesis> + 6 =

Try it out on some equations to make sure it is working like you expect it to work.

Good luck.

Paul

Try it out on some equations to make sure it is working like you expect it to work.

Good luck.

Paul

Aug 21, 2015 | Office Equipment & Supplies

Now is the equation supposed to be y=2x+1? If so,

The graph of y = 2x+1 is a straight line

When x increases, y increases twice as fast, hence 2x

When x is 0, y is already 1. Hence +1 is also needed

So: y = 2x + 1

Here are some example values:

xy = 2x + 1

-1y = 2 × (-1) + 1 = -1

0y = 2 × 0 + 1 = 1

1y = 2 × 1 + 1 = 3

2y = 2 × 2 + 1 = 5

Check for yourself that those points are part of the line above!

The graph of y = 2x+1 is a straight line

When x increases, y increases twice as fast, hence 2x

When x is 0, y is already 1. Hence +1 is also needed

So: y = 2x + 1

Here are some example values:

xy = 2x + 1

-1y = 2 × (-1) + 1 = -1

0y = 2 × 0 + 1 = 1

1y = 2 × 1 + 1 = 3

2y = 2 × 2 + 1 = 5

Check for yourself that those points are part of the line above!

Jan 16, 2015 | SoftMath Algebrator - Algebra Homework...

no, output devices are things like speakers or a monitor. They output sound or images, microphones are input devices because they put sound into the system not out of it.

Oct 01, 2013 | Computers & Internet

To solving this problem you have to do next: type **2nd** then **F1** and

option 2:**NewProb**. Finally type **Enter**

option 2:

Jan 26, 2012 | Texas Instruments TI-89 Calculator

This should start wit X=something and Y=something, sorry I'm not an human algebra calculator....

Jul 29, 2011 | Computers & Internet

Hi, sorry but Most LG's no longer have audio outputs. The easiest way to get it ,You need to take the audio output from the source i.e. "cable box output"..if you have of course...

However whether your TV has this output or not we need to make some tests..5 different connections possibilities provided below.

(not by priority..you can start with any of it ).Below ,there is a sample TV back panel picture as well

Possible CONNECTIONS:

1) 2x RCA ports red / white is audio out ( L + R ) of TV to Stereo..

2) You can get also the audio digital output from the TV to a A/V receiver. the tv's optical audio out is stereo only mainly designed for freeview or tv audio to be output,

set the audio ouput on the TV menu to Dolby Digital, connect a digital optical out directly to the A/V receiver to receive audio signals.

3) since your TV has :2 x HDMI, SCART, AV, Component Video, VGA-sub, USB 2.0, connections,you may use the SCART plug to get Audio output for your TV .

TV's SCART connector which has 21 pins and "2x Audio Output " pins should be in it.

you need to buy an adapter called " RGB Scart Male to 3 RCA AV Female Adapter Converter" that can easily be found any electronic Market..one example as found eBay URL is below..

http://cgi.ebay.com/RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter-/130389078197

After you get this adapter,you need to carry the audio signal from SCART's RCA plugs to your Receiver with a 2x RCA (white/red ) cable.(if this does not work ,mfg should state somewhere in the manual..as your TV's "SCART socket IN only" ) if you properly connect IN/OUT plugs you will able to get the audio signal of the TV thru stereo..I recommend 2 $ value "RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter" with IN/OUT switch on it.

4) use HDMI connection of TV if you have HDMI input on your stereo of course...

5) if these are not an audio-out on one of these connectors , so you'll need to use the headphone socket if you want to plug it into a stereo. you need a cable 2x RCA to 3.5mm Headphone jack.

( This is the last ditch solution , since it mutes the whole sound.) ..

NOTE: if you connect this, pls be careful,your TV voice level will drive the stereo volume....

Hope this helps!..if more help requires Would you please let me know the result ?

Take care and please Remember to rate/vote and give me 4 Thumbs Up for us

to continue for Helping out the Community :)

However whether your TV has this output or not we need to make some tests..5 different connections possibilities provided below.

(not by priority..you can start with any of it ).Below ,there is a sample TV back panel picture as well

Possible CONNECTIONS:

1) 2x RCA ports red / white is audio out ( L + R ) of TV to Stereo..

2) You can get also the audio digital output from the TV to a A/V receiver. the tv's optical audio out is stereo only mainly designed for freeview or tv audio to be output,

set the audio ouput on the TV menu to Dolby Digital, connect a digital optical out directly to the A/V receiver to receive audio signals.

3) since your TV has :2 x HDMI, SCART, AV, Component Video, VGA-sub, USB 2.0, connections,you may use the SCART plug to get Audio output for your TV .

TV's SCART connector which has 21 pins and "2x Audio Output " pins should be in it.

you need to buy an adapter called " RGB Scart Male to 3 RCA AV Female Adapter Converter" that can easily be found any electronic Market..one example as found eBay URL is below..

http://cgi.ebay.com/RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter-/130389078197

After you get this adapter,you need to carry the audio signal from SCART's RCA plugs to your Receiver with a 2x RCA (white/red ) cable.(if this does not work ,mfg should state somewhere in the manual..as your TV's "SCART socket IN only" ) if you properly connect IN/OUT plugs you will able to get the audio signal of the TV thru stereo..I recommend 2 $ value "RGB-Scart-Male-3-RCA-AV-Female-Adapter-Converter" with IN/OUT switch on it.

4) use HDMI connection of TV if you have HDMI input on your stereo of course...

5) if these are not an audio-out on one of these connectors , so you'll need to use the headphone socket if you want to plug it into a stereo. you need a cable 2x RCA to 3.5mm Headphone jack.

( This is the last ditch solution , since it mutes the whole sound.) ..

NOTE: if you connect this, pls be careful,your TV voice level will drive the stereo volume....

Hope this helps!..if more help requires Would you please let me know the result ?

Take care and please Remember to rate/vote and give me 4 Thumbs Up for us

to continue for Helping out the Community :)

Jul 09, 2011 | Televison & Video

You have some numerical value stored in the variable x, which the calculator is plugging into the resultant equation.

You can clear individual variables with 2ND [VAR-LINK]. You can clear all one-character variables a-z with 2ND [F6] 1. You can initialize the machine for a new problem with 2ND [F6] 2.

You can clear individual variables with 2ND [VAR-LINK]. You can clear all one-character variables a-z with 2ND [F6] 1. You can initialize the machine for a new problem with 2ND [F6] 2.

Feb 10, 2010 | Texas Instruments TI-89 Calculator

You may be able to avoid messing with the optical output completely, if the TV has a headphone output, in which case, a phono-3.5mm jack adaptor will sort you out nicely.

If it has to be optical, I expect you can buy adaptors for this aswell, but I'd expect it to be more expensive.

Most local electronics stores will sell these. Radioshack is a good example. Also, you could look around on the internet.

If it has to be optical, I expect you can buy adaptors for this aswell, but I'd expect it to be more expensive.

Most local electronics stores will sell these. Radioshack is a good example. Also, you could look around on the internet.

Jan 25, 2010 | Sony LBT-ZX6 Shelf System

Hi,

This calculator does not have a Solve function or a solver. However this example of yours is very simple that you can do it by hand. If you do not mind I will show you how to solve it. Not everything needs a calculator.

You want to solve for x. OK

This calculator does not have a Solve function or a solver. However this example of yours is very simple that you can do it by hand. If you do not mind I will show you how to solve it. Not everything needs a calculator.

You want to solve for x. OK

- Start by gathering similar terms 4x-x =3x; -13+5 =-8
- Rewrite your equation as 3x+1=2x-8
- Make the +1 change side while changing its sign
- 4x+1 -1 = 2x-8 -1 or 4x=2x-9
- Make +2x on the Right hand side go to the left hand side, changing its sign in the process 4x-2x=-9 or 2x=-9
- Divide both members by 2. This gives
- x=-9/2 or -4.5 if a decimal result is required.

Dec 06, 2009 | Texas Instruments TI-30XA Calculator

If you want to get an answer like 1/2X for d/dx(X^2), you will have to
purchase a CAS calculator like Casio's Algebra FX-2 or Classpad. TI series calculators also have CAS.

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

**∫**xdx from 0 to 2, input as follows:

**∫**dx(X,0,2)

To calculate derivative at a point:

SHIFT+**∫**dx key X^2,3)

Display looks like this: d/dx(X^2,3).

However, you can calculate the numerical values of derivatives and integrals only.

To calculate the value of a proper integral:

- Press the 'ON' key;
- Press the Integral key ;
- Enter your expression (example X^2+X-3 etc);
- Press the 'comma' key after your expression;
- Input the first limit after comma, input comma again after first limit;
- Close brackets;
- Press the equals key, display may return after a while with the answer.

To calculate derivative at a point:

- Press Shift and then the integration key.
- Enter your function;
- Input comma;
- input the point at which you want to evaluate the derivative;
- Close bracket and press enter.

SHIFT+

Display looks like this: d/dx(X^2,3).

Oct 23, 2009 | Casio FX-300MS Calculator

May 21, 2014 | Texas Instruments TI-89 Calculator

Feb 17, 2014 | Texas Instruments TI-89 Calculator

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