Friday, January 29
Announcements
If you submitted your Quiz #1 for a regrade, come pick it up
from me (before or after class)
WeBWorK #4 is now open
Due Wednesday at 9pm
Covers material from “Week 4”—see syllabus on course
web page
Solutions to (all versions of) Quiz #2 are online
Quiz #2 papers will be available in the MLC starting
Thursday
Grades posted in Connect by Friday
Friday, January 29
Clicker Questions
Clicker Question 1
That other identity
Which of the following identities is correct?
A. cot2 x + csc2 x = 1
Easier than memorizing!
B. tan2 x + sec2 x = 1
Divide both sides of
C. cot2 x
csc2 x = 1
D. sec2 x
tan2 x = 1
E. tan2 x
sec2 x = 1
sin2 x + cos2 x = 1
by cos2 x to get
tan2 x + 1 = sec2 x.
Trigonometry review: see the CLP notes Appendix
Clicker Question 2
Trickier than it seems
Evaluate
Z
tan x dx.
A. (tan x)/(sec x) + C
B.
C.
log |cos x| + C
sec2 x
+C
D. log |sec x+tan x|+C
E. 1/(1 + x2 ) + C
Or, if you prefer,
log
1
cos x
+C
= log | sec x| + C.
A sneaky substitution: u = cos x
Z
Z
sin x dx
cos x
Z
du
=
u
= log |u| + C
tan x dx =
=
log |cos x| + C.
Clicker Question 3
Prefer sines and cosines?
If we wanted to use the sin/cos strategy from Friday on this
same integral,
Z
sin5 x
dx =
cos8 x
Z
sin5 x (cos x)
8
dx,
which of the following tactics would we employ?
A. write sin5 x (cos x)
u = cos x
8
= sin x (1
B. write sin5 x (cos x)
8
= sin5 x (1
5
8
5
8
C. write sin x (cos x)
D. write sin x (cos x)
u = sin x
E. none of the above
5
= sin x (1
= sin x (1
cos2 x)2 (cos x)
8
and set
sin2 x)
4
and set u = sin x
2
4
and set u = cos x
sin x)
cos2 x)2 (cos x) 8
and set
Friday, January 29
“More than Math” Mondays
OUTweek is an annual event
hosted by the Pride Collective
featuring more than twenty
discussions, workshops, and
more!
Go to our Facebook page Pride
UBC and find the event
“OUTweek 2016” for a full
schedule.
Queer U is an academic
conference happening Saturday!
Art & Performance Night,
happening Thursday, Feb 11, will
feature two slam poets and an
open mike.
Our Valentine’s Dance on Feb 12
will feature Bell’s Roar and a DJ!
Queer 101 Workshop: Wed Feb 9
FRIDAY, FEB 5
Opening Ceremony and Discussion
Stormcrow Social Night (all ages)
SATURDAY, FEB 6
Queer U
Queer U Reception
SUNDAY, FEB 7
Safer Sex Workshop
Queer Sexuality Workshop
MONDAY, FEB 8
Family Day Potluck and Chat
Writing Workshop
TUESDAY, FEB 9
Anti-Heteronormative Relationships
Discussion
Queer 101 Workshop
QTIMIPOC Workshop
WEDNESDAY, FEB 10
Concourse Fair
Sign-making for march
March
Community Activism & Culture
Discussion
THURSDAY, FEB 11
Non-binary discussion
Concourse Fair
Queer Musicians Workshop
Art & Performance Night
FRIDAY, FEB 12
Closing Discussion
A Dear and Queer Valentine’s Dance