#ATTENDANCE QUIZ for Lecture 5 of Math251(Dr. Z.)
#EMAIL  RIGHT AFTER YOU WATCHED THE VIDEO
#BUT NO LATER THAN  Sept. 21, 2020, 8:00PM (Rutgers time)
#THIS .txt FILE (EDITED WITH YOUR ANSWERS)
#TO:
#DrZcalc3@gmail.com
#Subject: aq5
#with an ATTACHMENT CALLED:
#aq5FirstLast.txt
#(e.g. aq4DoronZeilberger.txt)



#THE ATTENEDANCE QUESTIONS AND ANSWERS IN LECTURE 5

#LIST ALL THE ATTENDANCE QUESTIONS FOLLOWED BY THEIR ANSWERS


Attendance Question 1: 
Let a = 7th digit of your RUID
Let b = 9th digit of your RUID
Find curvature of the curve 
r(t) = <t^a, t^b, t^(2*a)> at the 
point <2^a, 2^b, 4^a>



Attn Ques 1 Answer:
a = 3
b = 4
r(t) = [t^3 t^4 t^6]
pt [8 16 64]  
[t^3 t^4 t^6] = [8 16 64]  
t^3 = 8
t^4 = 16
t^6 = 64
t = 2
r'(2) = [12 32 192]
r''(2) = [12 48 480]
[12 32 192] x [12 48 480]
= [6144 -3456 192]/7051.9
= [6144/7052 -3456/7052 192/7052]




Attendance Question 2:
Who is your favorite rock band?

Attendance Question 2 Answer: 
ACDC, Rolling Stones