[Script Info]
Title: 
[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:01.79,0:00:03.76,Default,,0000,0000,0000,,- In this video we are\Ngoing to take a look at
Dialogue: 0,0:00:03.76,0:00:04.96,Default,,0000,0000,0000,,finding the absolute value
Dialogue: 0,0:00:04.96,0:00:09.90,Default,,0000,0000,0000,,on the TI-83 Plus and TI-84\Nseries of calculators.
Dialogue: 0,0:00:09.90,0:00:11.65,Default,,0000,0000,0000,,Fairly simple, so we are just
Dialogue: 0,0:00:11.65,0:00:14.99,Default,,0000,0000,0000,,going to concentrate on the\Nhome screen for right now.
Dialogue: 0,0:00:14.99,0:00:17.46,Default,,0000,0000,0000,,If you have to find the\Nabsolute value of say,
Dialogue: 0,0:00:17.46,0:00:21.07,Default,,0000,0000,0000,,X when the absolute value\Nof X is equal to seven,
Dialogue: 0,0:00:21.07,0:00:23.96,Default,,0000,0000,0000,,that's going to take some graphing.
Dialogue: 0,0:00:23.96,0:00:26.40,Default,,0000,0000,0000,,And so if you are not there\Nyet, don't worry about it.
Dialogue: 0,0:00:26.40,0:00:28.40,Default,,0000,0000,0000,,I'll have that in a different video.
Dialogue: 0,0:00:28.40,0:00:31.16,Default,,0000,0000,0000,,Alright, let's go ahead and get started.
Dialogue: 0,0:00:31.16,0:00:33.56,Default,,0000,0000,0000,,So, I've got my calculator here
Dialogue: 0,0:00:33.56,0:00:35.16,Default,,0000,0000,0000,,and I just want to find the absolute value
Dialogue: 0,0:00:35.16,0:00:37.07,Default,,0000,0000,0000,,of negative three.
Dialogue: 0,0:00:37.07,0:00:39.55,Default,,0000,0000,0000,,You might know that right\Noff the top of your head
Dialogue: 0,0:00:39.55,0:00:41.32,Default,,0000,0000,0000,,that the absolute value of negative three
Dialogue: 0,0:00:41.32,0:00:43.100,Default,,0000,0000,0000,,is in fact three because,
Dialogue: 0,0:00:43.100,0:00:47.14,Default,,0000,0000,0000,,the absolute value stands\Nfor the distance between
Dialogue: 0,0:00:47.14,0:00:50.03,Default,,0000,0000,0000,,the number inside and zero.
Dialogue: 0,0:00:50.03,0:00:52.20,Default,,0000,0000,0000,,And you take three steps\Nin order to get to three
Dialogue: 0,0:00:52.20,0:00:55.17,Default,,0000,0000,0000,,from zero from negative three.
Dialogue: 0,0:00:55.17,0:00:57.20,Default,,0000,0000,0000,,But, if you want to do\Nit in the calculator,
Dialogue: 0,0:00:57.20,0:00:58.29,Default,,0000,0000,0000,,just because,
Dialogue: 0,0:00:59.50,0:01:01.48,Default,,0000,0000,0000,,then you could do so
Dialogue: 0,0:01:01.48,0:01:03.38,Default,,0000,0000,0000,,using the math button.
Dialogue: 0,0:01:03.38,0:01:04.40,Default,,0000,0000,0000,,Press math.
Dialogue: 0,0:01:04.40,0:01:06.97,Default,,0000,0000,0000,,It opens up a set of menus
Dialogue: 0,0:01:06.97,0:01:09.88,Default,,0000,0000,0000,,and you scroll over to num,\Nwhich stands for number
Dialogue: 0,0:01:09.88,0:01:11.56,Default,,0000,0000,0000,,and this is where all\Nof the stuff you might
Dialogue: 0,0:01:11.56,0:01:14.42,Default,,0000,0000,0000,,want to use on numbers would go.
Dialogue: 0,0:01:14.42,0:01:18.96,Default,,0000,0000,0000,,And the very first one, abs\Nstands for absolute value.
Dialogue: 0,0:01:18.96,0:01:21.60,Default,,0000,0000,0000,,So we are going to press\Nenter to activate that
Dialogue: 0,0:01:21.60,0:01:23.60,Default,,0000,0000,0000,,and we are just going to\Nput in negative three.
Dialogue: 0,0:01:23.60,0:01:25.71,Default,,0000,0000,0000,,Now don't forget, negative is down here
Dialogue: 0,0:01:25.71,0:01:27.35,Default,,0000,0000,0000,,right next to the enter button,
Dialogue: 0,0:01:27.35,0:01:31.40,Default,,0000,0000,0000,,not one of the blue\Nbuttons, so negative three.
Dialogue: 0,0:01:31.40,0:01:33.45,Default,,0000,0000,0000,,Close the parenthesis, always a good idea
Dialogue: 0,0:01:33.45,0:01:37.07,Default,,0000,0000,0000,,even though it might always be necessary.
Dialogue: 0,0:01:37.07,0:01:40.22,Default,,0000,0000,0000,,Press enter, and we get\Nthe answer of three.
Dialogue: 0,0:01:40.22,0:01:41.99,Default,,0000,0000,0000,,And so you can use this to check yourself
Dialogue: 0,0:01:41.99,0:01:43.10,Default,,0000,0000,0000,,if you're really not sure.
Dialogue: 0,0:01:43.10,0:01:45.13,Default,,0000,0000,0000,,Should I change the sign or should I not?
Dialogue: 0,0:01:45.13,0:01:47.01,Default,,0000,0000,0000,,A very common mistake that I've seen
Dialogue: 0,0:01:47.01,0:01:49.32,Default,,0000,0000,0000,,in students in the past is simply that
Dialogue: 0,0:01:49.32,0:01:52.42,Default,,0000,0000,0000,,when they get this idea that\Nit's just switch the sign
Dialogue: 0,0:01:52.42,0:01:54.34,Default,,0000,0000,0000,,and it's not just switch the sign
Dialogue: 0,0:01:54.34,0:01:56.90,Default,,0000,0000,0000,,as we'll see in this next one.
Dialogue: 0,0:01:56.90,0:01:58.00,Default,,0000,0000,0000,,So in this next example,
Dialogue: 0,0:01:58.00,0:02:00.81,Default,,0000,0000,0000,,we want to take the\Nabsolute value of eight.
Dialogue: 0,0:02:00.81,0:02:03.58,Default,,0000,0000,0000,,And so we ask ourselves,\Nwell how far away is eight
Dialogue: 0,0:02:03.58,0:02:05.04,Default,,0000,0000,0000,,from zero?
Dialogue: 0,0:02:05.04,0:02:05.88,Default,,0000,0000,0000,,Well,
Dialogue: 0,0:02:07.24,0:02:10.06,Default,,0000,0000,0000,,well, it could be eight but\Ndo I switch the sign or not?
Dialogue: 0,0:02:10.06,0:02:11.37,Default,,0000,0000,0000,,Well, let's check.
Dialogue: 0,0:02:11.37,0:02:12.57,Default,,0000,0000,0000,,So we press the math button,
Dialogue: 0,0:02:12.57,0:02:16.15,Default,,0000,0000,0000,,that gets us over here to\Nour little set of menus.
Dialogue: 0,0:02:16.15,0:02:18.81,Default,,0000,0000,0000,,We scroll over to num, for number,
Dialogue: 0,0:02:18.81,0:02:20.48,Default,,0000,0000,0000,,and we press enter for absolute value
Dialogue: 0,0:02:20.48,0:02:22.46,Default,,0000,0000,0000,,or you could press the number one
Dialogue: 0,0:02:22.46,0:02:26.22,Default,,0000,0000,0000,,and it will enter absolute\Nvalue directly on the screen.
Dialogue: 0,0:02:26.22,0:02:28.42,Default,,0000,0000,0000,,Let me put an eight,\Nclose the parenthesis,
Dialogue: 0,0:02:28.42,0:02:29.82,Default,,0000,0000,0000,,and hit enter.
Dialogue: 0,0:02:29.82,0:02:31.25,Default,,0000,0000,0000,,And we get eight.
Dialogue: 0,0:02:31.25,0:02:33.85,Default,,0000,0000,0000,,And so our answer is eight,\Nso we don't switch the sign.
Dialogue: 0,0:02:33.85,0:02:35.77,Default,,0000,0000,0000,,Oh, that's a good idea.
Dialogue: 0,0:02:36.84,0:02:38.98,Default,,0000,0000,0000,,Alright, that's how\Nyou find absolute value
Dialogue: 0,0:02:38.98,0:02:41.38,Default,,0000,0000,0000,,on your TI-83 Plus or TI-84\Nseries of calculators.