# 20 Most Recent Texas Instruments TI-83 Plus Calculator Questions & Answers

if you try to reduce the light on the screen and it dd not help
it could be a problem with the screen
if you want to fix the Calculator let me know

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Jack

Texas... | Answered on Apr 27, 2016

The natural log of 10E4 is about 11.51. The natural log of 1E4 is about 9.21.

Do you want the log of 10 to the fourth (ten thousand) or of 10 to the fifth (one hundred thousand)? What keys are you pressing to enter the argument? If you press 1 0 2ND EE 4 then you're inputting ten times ten to the fourth or ten to the fifth. If you want ten to the fourth, enter it as 1 2ND EE 4 .

Texas... | Answered on Feb 05, 2015

-1E-13 is a very small number. When doing this kind of a problem you can regard 1E-13 as 0.

Remember that pi is an irrational number. It is only estimated on your calculator. I just played around with a TI-83 and found the following answers:

cos(pi/2) = 0
cos(2*pi + pi/2) = 0
cos(4*pi + pi/2) = 1E-13
cos(20*pi + pi/2) = -1E-13

As you know, that correct answer to each of these is 0. The calculator gives non-zero answers because some very small errors are accumulating. There is nothing wrong with your calculator.

Texas... | Answered on Dec 21, 2014

Isolate the integer part (to the left of the decimal point)
Convert the non integer part (decimal part) into a fraction.
Write the result as (integer part) (fraction part)
3/2=1.5
Integer part is 1, decimal part is 0.5
0.5 as a fraction is 1/2
3/2= 1 1/2

Texas... | Answered on Sep 11, 2014

Use the logBASE function available in the MATH menu. Press MATH, use cursor-left/right to select the MATH submenu, then use cursor-up/down to access logBASE.

Texas... | Answered on Jun 08, 2014

To calculate the arctangent, use 2ND TAN. For example, to calculate the arctangent of 1, press 2ND TAN 1 ENTER

Texas... | Answered on Jun 08, 2014

You're trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Texas... | Answered on Jun 07, 2014

It's the key at the top left of the keyboard, just below the five function keys, marked "2ND"

Texas... | Answered on Apr 16, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

### TI-83 Plus Calculator Manual

Texas Instruments TI-83 Plus... | Uploaded on Jan 27, 2014

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