Question about Texas Instruments TI-89 Calculator

2 Answers

How do I enter: 0.0665[integral from 48 to 60](e^(-0.0139(x-48)^2)dx into a ti-89

Posted by on

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    One Above All:

    The expert with highest point at the last day of the past 12 weeks.

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

  • Texas Instru... Master
  • 102,366 Answers

.0665 2ND 7 (-) .0139 ( X - 48 ) ^ 2 ) , X , 48 , 60 )

The "(-)" is the change-sign key between the decimal point and ENTER.
"X" is the letter X below HOME.

Posted on Feb 07, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Texas Instru... Master
  • 7,993 Answers

I do not think that the TI89 Titanium is bale to perform this calculation in the exact mode or the approximate one. Anyway, the command line appears at the bottom of the screen. It is continued in the second screen.

how do I enter: - c1d6be9.png

f42506b.jpg

However if you want the value, here it is.
a6f6c40.jpg

Posted on Feb 10, 2010

  • k24674 Feb 10, 2010

    OOPS; the word "bale" should read "able"

  • k24674 Feb 12, 2010

    Your integral revisited.
    When the TI92 (similar to the TI89Titanium as egards the OS) failed to calculate your integral and found a divergent result, I was puzzled and switched to the TI-Nspire CAS. However I was feeling unesase in the back of my mind: Why did the integral diverge?
    Then I thought about using the obvious change of variable which would reduce the number of expressions that the calculator has to handle. And that simple change allowed the calculator to find the result.

    CHANGE OF VARIABLE
    Let X=x-48, then dX=d(x-48)=dx
    The lower limit of integration in X becomes 0 and the upper limit of integration becomes 60-48=12.
    Now the integral takes the form you see in the screen capture below, and the result is on the right.


    When configured to do exact calculations, the calculator failed to find a result (top of screen), but in Auto or Approximate modes, the result was found. Here the FLOAT was set to 12 decimal digits.

    Conclusion: Don't just start typing expressions in calculator, but always strive to take advantage of any simplifications before hitting the EXE or = key.


×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My TI-89 does not calculate integrals, etc. for example Int(x) will result in Int(x)


Don't spell it out. Use the integral sign, available by pressing 2nd then 7.

For this example, press 2nd 7 2nd Y X ) , ) ENTER

2nd 7 gets you the integral, 2nd Y gets you the sine.

Oct 16, 2012 | Texas Instruments TI-89 Calculator

2 Answers

Why wont my ti-89 integrate


It ts easy to find solution for this problem. Type int(sin(377x-1.231),x,0.299,3.94)
See captured image below


10_6_2012_12_10_18_pm.jpg

Oct 06, 2012 | Texas Instruments TI-89 Calculator

1 Answer

How to calculate a finite integral


Press 2ND MATH to bring up the Math menu. Select "Calculus" and then "integrate." Enter the expression, the variable of integration, the lower limit, and the upper limit, separated by commas. Close the final paren and press ENTER or diamond ENTER.

For example, to calculate the integral from 0 to pi of sin(x) dx, you want

INT(sin(x),x,0,pi)

where INT is the integral sign and pi is the lower-case Greek pi.

Sep 22, 2010 | Texas Instruments TI-89 Calculator

1 Answer

I am having trouble figuring out why my ti 89 has trouble figuring out integrals. for example i know that the integral of x^2 is x^3/3+c but my ti 89 gives me the answer in a decimal of fraction form. i do...


The calculator does not give a result of an integration with a constant. The form of the result will depend ob the EXACT/APPROXIMATE mode you have selected.
In the following screen capture, your integral has been evaluated with mode set to EXACT,AUTO, and APPROXIMATE. Pay attention to the syntax.

60131ab.jpg

To set the computational mode to EXACT, press the MODE button use the Function keys F1,F2 or F3 to move from page to page, point to EXACT/APPROX and use the right arrow key to unfold the submenu, then the Up or Down arrow to select AUTO, EXACT or APPROXIMATE and press ENTER to SAVE Configuration.
If the integral cannot be found in EXACT mode, the calculator will echo the command without calculating the integral.

Apr 26, 2010 | Texas Instruments TI-89 Calculator

1 Answer

TI 89 when solving equations or integrating a message appears:


With the ALPHA keyboard, Type in the NewProb command and press ]ENTER] It resets the one-letter variables to their default status.
Alternatively, you can use the CATALOG of commands to launch the NewProb command.
Another way is
In HOME directory, press the [2nd][F1] to activate the F6 key. In the menu list, press 1:Clear a-z and ]ENTER].
If you have to use the variable x multiplied by a function (sin, cos, tan, log, etc) do not used implied multiplication: enter the [*] explicitly.

Apr 14, 2010 | Texas Instruments TI-89 Calculator

2 Answers

Can i calculate calculus using fx-991ms


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:

  1. Press the 'ON' key;
  2. Press the Integral key b8325f5.jpg;
  3. Enter your expression (example X^2+X-3 etc);
  4. Press the 'comma' key after your expression;
  5. Input the first limit after comma, input comma again after first limit;
  6. Close brackets;
  7. Press the equals key, display may return after a while with the answer.
for eg to calculate xdx from 0 to 2, input as follows:

dx(X,0,2)

To calculate derivative at a point:

  1. Press Shift and then the integration key.
  2. Enter your function;
  3. Input comma;
  4. input the point at which you want to evaluate the derivative;
  5. Close bracket and press enter.
Example, to calculate d/dx X^2 at 3 input:

SHIFT+dx key X^2,3)

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


Oct 23, 2009 | Casio FX-300MS Calculator

1 Answer

I am trying to find the integral to x*sinx on my ti-89 but everytime I get an argument error message. Is there a different x button other than the obvious big white x button?


Hello,
Here is a screen capture of the integral.

1546ae2.jpg
The dummy variable x may contain some previously defined value. Clear old values . In Home folder [2nd][F6: Clean Up][ 1:Clear a-z] [ENTER][ENTER] or [2:NewProb][ENTER][ENTER]
Make sure you insert the multiplication sign. And do not forget to put the argument x of the function inside parentheses.
Hope it helps.

Sep 30, 2009 | Texas Instruments TI-89 Calculator

1 Answer

I can't differentiate a function and I'm quite


Hello,
Clearly the x variable stores value zero. Press [F6] ( 1:clear a-z) [ENTER] and restart your derivative.
Hope it helps.

Sep 29, 2009 | Texas Instruments TI-89 Calculator

1 Answer

When I differentiate or integrate using TI-89, i get in solution sometimes 0h0 or 0HFFFF, what do these mean?


Hello,

You calculator is set to base mode Hexadecimal (numeration in base 16). Change this mode to decimal.
Press [MODE] [F2] you get the base setting at the bottom of the screen. Press [Right arrow] and select 1 (dec)55db158.jpg
At this point Enter to save configuration.

Hope it helps

Sep 04, 2009 | Texas Instruments TI-89 Calculator

Not finding what you are looking for?
Texas Instruments TI-89 Calculator Logo

Related Topics:

135 people viewed this question

Ask a Question

Usually answered in minutes!

Top Texas Instruments Office Equipment & Supplies Experts

kakima

Level 3 Expert

102366 Answers

k24674

Level 3 Expert

7993 Answers

Stevan Milanovic

Level 2 Expert

260 Answers

Are you a Texas Instruments Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...