#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

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

Answer:
t^3=8 t^3=8 t^6=64  t=2
r'= <3t^2,3t^2,6t^5> r''=<6t,6t,30t^4>
r'(2)= <12,12,192> r''(2)=<12,12,480>
r' X r''= 3456,-3456,0
|r' X r''|=4887.52 
|r'|=192.749^3=7160993.78
=.000683




Question 2:
Whose your favorite rock band?

Answer:
I don't listen to rock so no one