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Calculus III, Section 005 Lecture - Shared screen with speaker view
Dylan Lane
06:14
I can hear.
Mary Pang
06:15
I can hear:)
Jerry Yu
06:17
ok
Jerry Yu
06:20
Me to now ty
Ares Li
08:22
do we have to attend office hour ?
Parth Choksey
08:36
I wasn’t able to join the campus wire group it says wrong code
Ares Li
08:57
Thank you!
Parth Choksey
09:11
For sure
Parth Choksey
09:14
Thank you
Jerry Yu
17:39
Question: is vectorXs paraallel to vector?
Wendy Wei
32:29
What is this dot mean? Get the angle?
Frank Liu
32:51
dot product
Wendy Wei
33:25
Ohhh, I see
Ares Li
42:15
could you explain rule one again? or give an example?
shiralinsk
42:51
It is just an estimate though right?
Ares Li
46:17
Clear! Thank you!
Taisheng Li
01:06:22
do we have quizzes starting next class?
shiralinsk
01:06:54
Are we allowed to use notes?
Ares Li
01:19:51
excuse me
Ares Li
01:19:57
what is vector 0?
Wendy Wei
01:20:32
It means nothing maybe?
Ares Li
01:21:09
does vector 0 has direction?
Frank Liu
01:25:30
probably not, because it has a value of 0 in all coordinates, and you would have to divide by 0 to find the unit vector, which is also referred to as direction, which is not allowed
Ares Li
01:26:07
ok thankyou!
Jerry Yu
01:26:37
Q2: what happen to ca(b), when phata= pi/2????
shiralinsk
01:28:50
What does the negative or positive ca(b) mean?
shiralinsk
01:29:32
Is it just the direction?
Elaine Zhang
01:30:21
I think so, it indicates if the projection is in the same or opposite direction as vector a
Wendy Wei
01:31:34
Why can Ca(b) times u? Aren’t they both vectors?
Jackie HE
01:31:57
cab is a scaler
Dylan Lane
01:32:00
C is the scalar projection
Jackie HE
01:32:00
:)
Wendy Wei
01:32:22
Ohhh. Got it
Jackie HE
01:34:48
does coo means cos?
shiralinsk
01:35:44
yes
Jackie HE
01:35:56
thanks
Ethan
01:57:50
is there any difference between these I,j,k and I hat j hat k hat?
Dylan Lane
01:58:29
Wondering about the notation difference too
Frank Liu
02:00:23
they're the same unit vectors so it's probably a stylistic choice
Srijon Sinha
02:04:47
Question: When is the web assign due?
Rocky Guo
02:04:59
When does the quiz due?
Berenice
02:05:28
WebAssign is due Sunday
Jerry Yu
02:05:47
Can we resubmit quiz????
Jerry Yu
02:05:52
Just like resubmit homework?
Taisheng Li
02:06:13
for the hw can we put more than one problem on a page
Ethan
02:07:53
could you tell me if you think my homework is legible?