Question about Apple Customized 15" MacBook Pro Laptop Computer Notebook

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Cursor jumping all over making screen scroling

Cursor jumping or sliding all over making the screen move up down left and down, making the lap top impossible to do with it

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This was a common problem with certain MacBook Pros. I would highly recommend that you need to replace the keyboard/palm rest. These can be purchased via eBay. Make sure that you purchase the right one for your laptop as there are several different variations. The palmist has numbers on the back of it and also there is a sticker on the inside that gives the info about the computer. These will help you find the right unit you need. There are other options as well, first and foremost is to update your software, the next would be to reinstall all software, which of coarse means that you will loose everything and it takes forever to do. But my experience has been that the palmers/keybaord has gone bad.

Posted on Feb 11, 2015

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If you're using an external mouse, make sure you have a single colour mouse pad as anything with different colours/lines on will cause the effect you're having.
You mention it's customised, could it be the customisation that's causing the problem.

Posted on Nov 22, 2013

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Posted on Jan 02, 2017

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I don't know how to trace "Whole"(?) co-ordinates on the TI-84. ((2,4)/(4,8) Instead of (1.223,3.96)/(4.5,6.324))


Hello,
The trace allows you to move continuously along the curve you have drawn.
To do that you use the left and right arrows.
As the cursor moves along the curve, its coordinates are displayed at the bottom of the screen. You cannot fix the step. However I suspect it to be related to the Xres variable that is set in the Window dimension.

Basically, you make the cursor stroll along the curve and read what the screen displays. If you have several curves, you jump from one to the other by pressing the UP or Down Arrow.

Hope it helps.

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

1 Answer

My TI 84 Plus Caluclator


Hello,
The function Intersect from the CALCULATE menu finf the coordinates of a point at which two or more curves intersect.
To use it:
1. Draw the functions.
7036100.jpg
2. Press [2nd][CALC][5:Intersect]

4c21f92.jpg

The cursor is on one of the curves. Read the equation top of the screen. If it is one of the curves you want press [ENTER]. The cursor jumps to another curve (in this case the only other curve).
f75e725.jpg
Read the equation on top of the screen to verify thst it is the correct one. Press [ENTER]. The calculator asks asks for a guess of the coordinates of the intersection point.
ee9cd29.jpg

As the intersection point is to the left of the current cursor position, use the left arrow to move cursor closer to the point.

d22f78b.jpg
Press [ENTER], and wait for the solution. Here it is.
2b043d0.jpg

In your question you talk about y intercept. If you want to calculate the ordinate of the point where a curve intersects the Y-axis, it is more efficient to use the [2nd][CAL][1:Value] selection.
0a11a73.jpg
You enter X=0 and press [ENTER]. The cursor jumps on the first curve (Y1=) an gives you the y-intercept.
7420d8f.jpg
Notice the position of cursor on graph. The y-value at the bottom is its ordinate.
To get the y-intercept of the second curve, leave the cursor on y axis and press the DownArrow. Cursor jumps to tthe second curve.
Since the X=0 is still stored, the value of y is displayed directly.

b14da69.jpg

Hope it helps.

Oct 27, 2009 | Texas Instruments TI-84 Plus Calculator

3 Answers

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this problem is caused by a defective mouse, replace it.

Sep 09, 2009 | Logitech Marble Mouse Trackball

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Moving cursor.


well there is a few things that could possibly be happening. if it is a touch pad or a wireless mouse something like a cell phone sitting close enough to them could be causing some interference. the second one is that you could possibly have the mouse keys turned on where you can control the mouse with the keyboard.

Apr 29, 2008 | Dell Latitude D800 Notebook

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