Question about Texas Instruments TI-89 Calculator

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You have your angular mode set to degrees. Ten degrees is about 0.17 radians, and for small x: sin(x) is nearly equal to x. Thus, sin(x) from -10 to 10 is indeed nearly a straight diagonal line.

Press MODE, then scroll down to "Angle" to change the angular mode.

Posted on Jun 03, 2010

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Posted on Jan 02, 2017

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There are several ways of doing this.

Since you're using a graphing calculator, you can always graph it as a function of 'a' and use the graphical tools.

Another way is to use the solve() function. For example, to find the value of a where the integral of sin(x) from 0 to a equals one, enter

solve(fnInt(sin(X),X,0,A)-1),A,1.5)

solve( and fnInt( are accessible through the CATALOG. The 1.5 is an initial guess.

Since you're using a graphing calculator, you can always graph it as a function of 'a' and use the graphical tools.

Another way is to use the solve() function. For example, to find the value of a where the integral of sin(x) from 0 to a equals one, enter

solve(fnInt(sin(X),X,0,A)-1),A,1.5)

solve( and fnInt( are accessible through the CATALOG. The 1.5 is an initial guess.

Apr 19, 2014 | Texas Instruments TI-84 Plus Silver...

At first, in **menu** choose **settings** and set on **Graphing Angle** option to **Radian**. Then graph function. See captured image

Aug 15, 2013 | Texas Instruments TI-Nspire CX Graphing...

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) .

If you want "twenty-two times log-base-ten of x", write it as 22*log(x) .

Aug 11, 2012 | Texas Instruments TI-89 Calculator

The calculator does not support 3D parametric functions, but there is a procedure that will help you do that. Here is the link to the page that describes it.

Jun 12, 2012 | Texas Instruments TI-89 Graphing Calc...

Set your calculator to RAD mode and then graphing functions.

See example for** y=sin x**

See example for

Nov 10, 2010 | Texas Instruments TI-89 Calculator

The calculator is set up to produce exact results. If you want the expression to be evaluated put a decimal mark at the end of the 4.

to making 4 a floating point number instead of integer.

Alternatively, press the [MODE] key. Scroll down through the pages of options until you reach the line labeled Exact/Approx. When cursor is on that line, use the right arrow key to open the menu. Select [3:Approximate]. Press [ENTER] to save.

to making 4 a floating point number instead of integer.

Alternatively, press the [MODE] key. Scroll down through the pages of options until you reach the line labeled Exact/Approx. When cursor is on that line, use the right arrow key to open the menu. Select [3:Approximate]. Press [ENTER] to save.

Aug 25, 2010 | Texas Instruments TI-89 Calculator

Are you in degrees instead of radians? I get two small bars at either end of the screen when in degrees and a more readable graph when in radians.

Mar 11, 2010 | Texas Instruments TI-84 Plus Calculator

Your calculator is set in radians. Press mode key. Arrow down to 3rd line. Highlight degree and press enter. Your calculator is now in degrees, not radians. To get out of the mode screen and back to home screen, press 2nd and then mode.

Aug 05, 2009 | Texas Instruments TI-84 Plus Calculator

"♦" "7" will give you log base 10 for the texas instuments TI-89 Titanium

Feb 20, 2009 | Texas Instruments TI-89 Calculator

Did you still need help with this? My suspicion is a missing multiplication sign. Sometimes you need to be very explicit in what you want the calculator to do. Have you tried sqroot(sin(2*theta)) explicitly putting the multiplication symbol in there? I think 2theta is interpreted as it's own variable name...

Jan 11, 2009 | Texas Instruments TI-89 Calculator

May 21, 2014 | Texas Instruments TI-89 Calculator

Feb 17, 2014 | Texas Instruments TI-89 Calculator

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