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B
обозначение (известного) числа, элемента множества
biː
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1. sorry, Mrs.
B
, I'm covering your face up,
2. It's a matrix times
b
.
3. So, now, BX means we apply the transformation
B
to X.
4. BV: He's my teacher, yes Bob, hey hey look (types Bob on the screen)
B
O
B
5. And I get some answer,
b
.
6. When I put there, I should have put  minus
b
.
7. I can look at the equation Cx=
b
.
8. if
B
is zero there always is an obvious solution,
9. And so now we can solve this for a and
b
.
10.
B
man? Oh you're there
11. unknowns, Ax=
b
.
12. KT: your teachers name? BV: Yes KT:(fingerspells)
B
ILL
13. Cloak and dagger stealth missions, assassinations,
B
&E (that's Breaking and Entering)
14. We just compute: X equals A inverse
B
.
15. a and
b
. Then, it means we'll move along
16. a1, a2, a3, and then the components of
B

17. I added in
B
the gap top tap from today
18. This went out a and up
b
.
19. divided by P of A and
B
.
20. has this, what I described here, didn't look at
b
.
21. Can I solve A x=
b
for every
b
?
22. "best fit" line of a form y equals ax
b
23. would I do u=A\
b
and then separately A\c?
24. There would not be a solution for every
b
.
25. It's A\
b
.
26. equals A inverse
B
. So we have to multiply,
27. So if I give you this
b
, can you get x?
28. Can I solve A x =
b
for every righthand side
b
?
29. Ax=
b
has a solution, in other words.
30. this said find a combination to give
b
,
31. group
B
that are attempting to attain a goal.
32. will have to be a and
b
, not x and y.
33. than or equal to
b
is bounded by the same inequality.
34. create transposes out of A,
B
and C.
35. a and
b
, a two by two linear system.
36.
B
man?
37. And partial d over partial
b
, we do the same thing,
38. Au=
b
.
39.
b
. So, to do that,
40. equal to P of
B
given A times P of
B
divided by P of A. This
41. A inverse times AX is A inverse
B
.
42. we can get every righthand side
b
and here
43. coefficients of a and
b
. If you have good eyes,
44. Every
b
means all the bs in three dimensional space.
45. But now I should write
b
of what?
46. over partial a= 0, partial d over partial
b
= 0.
47. equals some righthand side
b
.
48. must equal the height of
B
. (OK, it's a bit cluttered,
49. rotation matrices, that was the homework part
B
50. would be righthand sides
b
that I couldn't get.
51. BV:
B
O
B
52. remember by heart everything that was in part
B
of your
53. N times
b
equals sum of yi. Now, this quantities look
54. [
B
double OT.Y You are
55. weekend, and save part
b
for next week.
56. A,
B
, and C. They will all get the job done.
57. When I look at that I see a matrix multiplying
b
.
58. And the rate of change with respect to y will be
b
.
59. than or equal to
b
is this inequality.
60. form AX equals
B
then there are two cases.
61. BV: Hey, my teachers name is
B
O
B
KT: (fingerspells)
B
O
B
62. So, in fact,
B
cross A and A cross
B
are
63. instead of a single vector
b
or instead
64. except highways to get from city a to city
b
.
65.
B
L A S.
66. I think it's a spear aren't ia great rhymer
B
67. that I'll always call
b
.
68. And these are "Taai Taai,
b
..."
69. How do we minimize this function of a and
b
?
70.
b
to give that answer?
71. if I give you
b
and ask for x?
72.
B
for both ends are going to be free.
73. but different shading with respect to
b
instead of with
74. which would be axi plus
b
. I will write that as xia plus
b
75.
B
did action A in situation A, that would be wrong.
76. the area of the parallelogram with sides A and
B
.
77. So, there we go Mrs.
B
.
78. goofy zalto
b
movie into goofy's big
79. A
b
.
80. But don't worry
B
Man, I gotcha!
81. does it the other way around, x is A inverse
b
.
82. All right for real
B
. What is in the pouch?
83. and y over
b
be v. So, we'll have two new
84. Au=
b
.
85.
B
: Hello, I am fine.
86. are here and the righthand side
b
is there.
87. when would I not be able to produce some
b
off here?
88. transformation A. So, we first apply
B
,
89. the left with
B
as well?" That's correct,
90. Can we get every righthand side
b
?
91. AUDIENCE: So the thing on the bottom is P of
B
?
92.
b
is in the plane, but most righthand sides
93. What's the answer to Au=
b
.
94. I'm back to Au=
b
.
95. You ready, Mrs.
B
?
96. y over
b
squared equals one. That's the curve,
97. There
B
double O T Y
98. P of A given
B
is equal to P of
B
given A times P of A
99. A times
B
times C, you could say.
100. Every
b
means all the bs in three dimensional space.
101. close you gotta have that belt
B
now
B
it's subscribed but then you also gotta
102. equals 12 + 4
b
x
103. constant
b
.
104. If that vector is [a,
b
], that vector should be what?
105. If the user inputs a number for
B
such that
106. cross
B
. Because the length of A cross
B
107. to point
B
was pretty high relative
108. Which is this, this is
b
.
109. Where'd you go
B
man?
110.
B
man? Oh gosh, you're still here. Oooooh fuck!
111. Uhuh,
B
Boo...?
112. If AX=
B
, then let's multiply both sides by A inverse.
113.
b
, or ability a to ability
b
, and make
114.
b
and c. And now you will have actually
115. showed that we could get every
b
.
116.
b
... Lower case
b
is our estimate of the unknown parameter of beta, or the slope. And lower
117. KT: again name you BV:
B
ILL
118. direction of
B
, then your thumb will go in the
119. If Ax gives
b
, the inverse matrix
120. and I'm trying to find
b
.
121. So it does a or
b
, but not both.
122. of a to
b
and differentiable on the open interval of a to
b
. If f prime of x, or the derivative
123. If I have to compute A inverse and multiply by
b
,
124.
b
squared of them.
125. It's u equals A inverse
b
, right?
126. plus some constant
b
times 3 to the n.
127. transformation
B
, then transformation A.
128. of two vectors
b
and c I'm now putting n.
129. I can talk to him. Hey
B
man
130.  [Mrs.
B
] This is like your weekly calorie intake.
131. the value of
b
, and x does not appear before
b
as strings,
132. as
b
in this particular problem.
133.
B
. How do we solve that?
134. the utility formula is it's V times X of
B
minus P of
B
so here V is it's true
135. And you get some answer, say
b
.
136. If Ax is
b
, then x should be A inverse
b
.
137. So Cx=
b
could be solved sometimes, but not always.
138. That's my boy,
B
man.
139. I got something in my backpack here
B
. Let me
140. So that's P of A given
B
is equal to P of
B
given A?
141. the correct righthand side
b
.
142. roles of A and
B
, then you will either injure
143. has
B
for both ends.
144. inverse times
B
. And the other case is when the
145. That was the
b
.
146. Transform from x to
b
.
147. That solution is a matrix times
b
.
148. We wanted the combination that gave
b
and we found it.
149. This is
B
. Nonanimated edition. Oh my God
150. the left of
B
and not after it " Well,
151. type 3 plus 2, I can type a plus
b
.
152. a and
b
. There is a lot of clutter with
153. How do we minimize this function of a and
b
?
154. If AX=
B
, then let's multiply both sides by A inverse.
155. equal to
b
of d minus 1.
156. I can display
b
, and it's a different number, considerably
157. KT:
B
O
B
158.
B
: How's everything?
159. lecture. And let's say that
B
is maybe
160. get a function of a and
b
. Any questions?
161. X equals A inverse
B
. That's how I solved my system
162. Plus and I assume that
B
of t is standard Brownian motion,
163. to
b
is, I think, negative one.
164. you've never seen it before: A cross
B
and
B
cross A are not
165. '
b
', lower case
b
, and the y intercept 'a'. That is what I mentioned in the previous screen.
166. If we have to solve a linear system, Ax equals
B
,
167. Times
B
[ 1,  2,1].
168. What b's  so this is
b
= [
b
1,
b
2,
b
3]  do we get?
169. a and
b
. And, of course,
170. 0,3, 0,2. So, in A times
B
,
171. There it is, x is zero, y is three, that's
b
.
172. Invertible or not for
B
?
173. times x giving a vector
b
.
174. Having a bit of an identity crisis there
B
man?
175. KT: oh ok (fingerspells)
B
ILL BV: ok good thank you done. Your teachers name
B
ILL ok, now ask me.
176. Buh
B

B
Boris?
177. Let me take
b
to be It's a vector,
178. It's u equals A inverse
b
, right?
179. They all went to zero. He was halfway through the letter
B
and all the fiat currencies that started with the letter
B
,
180. Yeah, and don't so don't say
B
, and don't say Justin
181. you get a plus
b
plus c plus d.
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