Questions & Answers
TI-84 Plus calculator goes on,
Read about the nature of the cursor. It can be on Insert or overwrite. If the cursor is full square and flashing, that mean the memory register for the input line is full and you cannot input anymore strokes.
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You may be making a confusion between intercepts and intersections. Intercepts are crossing of the axes. Intersections are between two curves: You need to have two curves graphed. You choose the first curve by selecting it (Up or Down Key), and then the second one.
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Graph and trace buttons don't work
If either error occurs when trying to graph a function (not a STAT PLOT), the error can be corrected by turning off the STAT PLOTS. The following steps will turn the STAT PLOTS off, allowing the graph of the function to be displayed.• Press [2nd] [Y=] to access the STAT PLOTS menu.
• Select 4: PlotsOff.
• Press [ENTER].
• Try graphing a function like y = x^4-3x^3+6x-1
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How can I simplify a fraction after adding two fractions?
Factor both the numerator and denominator, and then divide both the numerator and denominator by the greatest common factor.
For example, 1/3 + 1/6 = 2/6 + 1/6 = 3/6. We have to simplify 3/6. The factors of 3 are 3 and 1. The factors of 6 and 1, 2, 3, and 6. The greatest common factor is 3. Dividing the numerator and denominator by 3 results in 1/2.
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What is wrong with my calculator? invNorm Error:Domain
- You specified an argument to a function or
instruction outside the valid range. This error is
not returned during graphing. The TI-84 Plus
allows for undefined values on a graph.
- You attempted a logarithmic or power
regression with a LX or an exponential or power
regression with a LY.
- You attempted to compute GPrn( or GInt( with
pmt2 < pmt1.
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Improper fraction to mixed number
You do the operation to get a decimal number.
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)
Integer part is 1, decimal part is 0.5
0.5 as a fraction is 1/2
3/2= 1 1/2
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What to do when error;invalid DIM shows up on the screen?
INVALID DIM error message may occur
if you are trying to graph a function that does
not involve the stat plot features. The error can
be corrected by turning off the stat plots. To
turn the stat plots off, press 2nd (stat plot) ,and
then select 4:PlotsOff.
• You specified a list dimension as something
other than an integer between 1 and 999.
• You specified a matrix dimension as something
other than an integer between 1 and 99.
• You attempted to invert a matrix that is not
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My ti-84 plus got wet and now wont turn on
the only thing that I can recommend it to stick it in a zip-lock bag full of dry rice for 24hrs. Sometimes there is moisture that you just can't see & rice has a way of attracting liquids from electronic components. Hence, potentially saving your electronic device. If this does work -- if I were you I would suggest always storing your calculator, ritually, in a zip-lock bag so this does not occur again (I do this -- TI-84s are not cheap accessories -- better safe then sorry). Good luck!
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