Question about Texas Instruments TI-89 Calculator

# I try to install software on a ti-89 and the dimension error when I open the program. Faso also commonly when derived from sin (x) the result is not cos (x) more so, 0.017 cos (x)

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• Texas Instru... Master

I do not know the program you installed, so I will skip the part.
As to the derivative of the sine function, your result is correct if the angle unit is degree.
d(sin(x))/dx = cos(x) is true only if the angle unit is the radian. In degrees, you would have a factor Pi/180 which is 0.174532925. I suggest you consult a calculus book to understand where that factor comes from.

Posted on Mar 18, 2011

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## Related Questions:

### My TI-30XB WONT CALCULATE INVERSE COS OR INVERSE SIN

Does it refuse to do so or does it give an error message?
Three common errors:
1. Not having the correct angle unit. Wrong result, No error message
2. Confusing reciprocal of sine (1/sin(x) with arc sine (x) ,sin^-1(x). Confusing the reciprocal of cosine, 1/cos(x) with arc cosine (cos^-1(x)). Wrong result, No error message
3. Taking the argument of the inverse sine and/or inverse cosine functions outside the interval [-1,1]. This gives a domain error.

Oct 28, 2013 | Texas Instruments TI-81 Calculator

### I get a pop-up ballon that says "USB device not recognized"

How do I fix Error: TI-89 Detected, but could not get status with the TI-89
using the TI Connect software for Windows?
The Operating System (OS) will need to be updated on the TI-89 in order for the TI Connect™ software to detect the status. Try the following procedure to install the OS from the TI-89 Boot Screen. Make sure TI Connect 1.6 is installed on the PC.
• Connect the TI Connectivity cable to the TI-89 and the computer.
• Do not start the TI Connect software.
**Force TI-89 into "Boot screen" (See instructions below**
• "Press I to install..." ([ALPHA]. [ 9 ]).
• Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader.
• Follow the on-screen directions to install OS version 2.09.
**Steps for Boot Screen:**
• Take one AAA battery out, press and hold down the Apps key while reinserting the battery to force device into the Boot Code screen.
• "Press I to install..." will appear.
Once the OS has completed installation, the TI Connect™ software will be able to detect the TI-89.

Mar 01, 2008 | Texas Instruments TI-89 Calculator

### 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

Oct 06, 2012 | Texas Instruments TI-89 Calculator

### TI-89 dimension mistmatch error

Dimension mismatch error occurs when arguments are not with same dimensions. 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. By the way, it it very easy to resolving your problem with differentiation. See captured image

As a result of differentiation you had to obtained:

(3b+2c)cos2x+(3c-2b)(sin2x)e^(3x)+2ae^(2x)

Feb 23, 2012 | Texas Instruments TI-89 Calculator

### TI-89 dimension mistmatch error

Dimension mismatch error occurs when arguments are not with same dimensions. 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. By the way, it it very easy to resolving your problem with differentiation. See captured image

As a result of differentiation you had to obtained:

(3b+2c)cos2x+(3c-2b)(sin2x)e^(3x)+2ae^(2x)

Feb 23, 2012 | Texas Instruments TI-89 Calculator

### My TI-89 won't solve for sin, cos, or tan. I can type in: sin(127) but instead of an answer it gives me sin(127) again. can someone please tell me how to fix this so that I can do my precalc homework?

Press diamond ENTER to convert the result to numeric form.

To have everything come out numeric, press MODE F2 then down-arrow down to Exact/Approx, then right-arrow and select APPROXIMATE. Press ENTER to set the choice, then ENTER again to save and exit.

Sep 21, 2010 | Texas Instruments TI-89 Calculator

### Differentiate each of the following w.r.t.x; 29.sin2xsinx

Use the rule for differentiating products of functions: ()' signifies derivative
(29*sin(2X)*sin(X))'= (29)'*sin(2X)*sin(X) +29* (sin(2X))'*sin(X) +29*sin(2X)*(sin(X))'
But
1. (29)'=0 derivative of a constant is zero
2. (sin(2X))'=cos(2X)*(2X)'=2*cos(2X)
3. (sin(X))'=cos(X)
Result is
(29*sin(2X)*sin(X))'= 29*2*cos(2X)*sin(X)+29*sin(2X)*cos(X)

You could also have cast your formula in the form
sin(2X)*sin(X)= 1/2[ cos(2X-X)-cos(2X+X)]=1/2[cos(X)-cos(3X)]
then calculated the derivative of
29/2*[cos(X)-cos(3X)]
which is
29/2*[-si(X) +3*sin(3X)]

The challenge for you is to prove that the two forms are equivalent
29*2*cos(2X)*sin(X)+29*sin(2X)*cos(X)=29/2*[-si(X) +3*sin(3X)]

Jun 21, 2010 | Vivendi Excel@ Mathematics Study Skills...

### Ti 89 detected but couldn't get status

Hello,
Here is what the FAQ and Knowledge Base area of the TI site has to say about the problem you are having. Hope it helps.

How do I correct the error message "TI-83 Plus or TI-89 detected, but could not get status" using the TI Connect software for Windows®?

The Operating System (OS) will need to be updated on the TI-83 Plus family or TI-89 calculator in order for the TI Connect software to detect the status. Try the following procedure to install the OS from the TI-83 Plus and TI-89 Boot Screen. Make sure TI Connect 1.6 is installed on the PC.

If using a TI-89 calculator:
• Connect the TI Connectivity cable to the TI-89 calculator and the computer.
• Do not start the TI Connect software.
**Force the TI-89 into the "Boot screen" (see instructions below)**
• "Press I to install..." (press the [9] key).
• Click on Start >> Programs >> TI Tools >> TI Connect >> TI OSDownloader.
• Follow the on-screen directions to install OS version 2.09.
**Steps for Boot Screen:**
• Take one AAA battery out, press and hold down the [APPS] key while reinserting the battery to force device into the Boot Code screen.
• "Press I to install..." will appear.
Once the OS has completed installation, the TI Connect software will be able to detect the TI-89.

Oct 31, 2009 | Texas Instruments TI-89 Calculator

### Looking for prgmPivot for Ti-89

Try contacting TI if there was no soluntion in your Operator's Manual.

Oct 17, 2009 | Texas Instruments TI-89 Calculator

### Different answer fro my TI-89 AND MY tI-81

Hello,
Your TI81 can only perform numerical calculation: It always give uour numbers. The TI89, a more sophisticated calculator, can of course do numerical calculation, BUT ALSO symbolic ones. You ask it for the derivative of sin(x) and it will give you cos(x).
Anyway, if you want a decimal result for you calculation above one of the numbers must have a decimal point (instead of writing 2PI write 2.PI.

The TI 89 can do exact calculations. But if you want approximate results any number in the sequence of operations must have the mark of a decimal. Numbers without decimal marks are considered integers, Integer numbers with a decimal mark are treated as floating point numbers ( meaning decimal).

Hope it clarifies things for you.

Nov 15, 2008 | Texas Instruments TI-89 Calculator

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