WEBVTT
1
00:00:00.390 --> 00:00:02.910 A:middle L:90%
okay, we know we have excess scored of seven
2
00:00:02.910 --> 00:00:05.599 A:middle L:90%
plus y squared and exes for. So what we're
3
00:00:05.599 --> 00:00:07.290 A:middle L:90%
gonna do is we're gonna set these equal to each
4
00:00:07.290 --> 00:00:11.699 A:middle L:90%
other and then solve seven plus y squared. So
5
00:00:11.699 --> 00:00:15.099 A:middle L:90%
for why, why is plus or minus three?
6
00:00:15.289 --> 00:00:19.570 A:middle L:90%
These are to bounce negative and positive three per a
7
00:00:19.859 --> 00:00:23.440 A:middle L:90%
plug into the formula for volume two pride times the
8
00:00:23.440 --> 00:00:26.300 A:middle L:90%
integral from our bounds again. Negative three deposited.
9
00:00:26.300 --> 00:00:28.789 A:middle L:90%
Three are two bounds. And now we're gonna be
10
00:00:28.789 --> 00:00:34.439 A:middle L:90%
multiply our times h which means we have five minus
11
00:00:34.439 --> 00:00:37.350 A:middle L:90%
. Why this the given region? We are we
12
00:00:37.350 --> 00:00:41.490 A:middle L:90%
rooting about the region five and we know that we
13
00:00:41.490 --> 00:00:46.429 A:middle L:90%
have five minutes Why of r and then we have
14
00:00:46.500 --> 00:00:51.020 A:middle L:90%
a TSH four minus squirt of seven plus y squared
15
00:00:51.219 --> 00:00:53.380 A:middle L:90%
. This came from above over here when we were
16
00:00:53.380 --> 00:00:57.710 A:middle L:90%
setting this equal to zero. Okay, this was
17
00:00:57.710 --> 00:01:00.549 A:middle L:90%
part a was driving the integral and writing it out
18
00:01:00.549 --> 00:01:03.350 A:middle L:90%
. Now for part B, we can simply use
19
00:01:03.350 --> 00:01:06.260 A:middle L:90%
the calculator, plug it into graphing calculator, math
20
00:01:06.260 --> 00:01:07.510 A:middle L:90%
way, any sort of calculator to solve and you
21
00:01:07.510 --> 00:01:11.030 A:middle L:90%
get 1 63 and then we have to write out
22
00:01:11.030 --> 00:01:19.849 A:middle L:90%
the decimal places 0.2712 as our solution