• Best of luck to the class of 2019 for their HSC exams. You got this!
    Let us know your thoughts on the HSC exams here
  • Like us on facebook here

Section I: Multiple Choice (1 Viewer)

photastic

Well-Known Member
Joined
Feb 11, 2013
Messages
1,853
Gender
Male
HSC
2014
for fuck sakes, i did not see that coming, that nails the bloody cover on the coffin, it must be 3...

i put 3 initially but then was like tanpi/2 is undefined, i freaking hate multiple choice now.
No, there is a chance at pi/2 there is an open circle, hence B would be the answer in this case.
 

chrisdelinet

Member
Joined
May 6, 2014
Messages
44
Gender
Male
HSC
2014
can you explain why that (sin(pi/2) -1)(tan(pi/2)+2) = 0, because i thought that undefined times zero is undefined and the calculator cannot figure it out.... i quite baffled tbh
 

photastic

Well-Known Member
Joined
Feb 11, 2013
Messages
1,853
Gender
Male
HSC
2014
can you explain why that (sin(pi/2) -1)(tan(pi/2)+2) = 0, because i thought that undefined times zero is undefined and the calculator cannot figure it out.... i quite baffled tbh
Hard to explain since I used 4u to graph it. I've seen these situations like absolute values where if you put the value in the calculator, it reads limited answers but when you graph the solution, there are actually more answers. But since this is 2u, they would most likely accept B since 2u is so limited.

so its B then?
Hope not :p
 

chrisdelinet

Member
Joined
May 6, 2014
Messages
44
Gender
Male
HSC
2014
for the sake of both us and people of similar mindset that they'll accept both, but that is most unlikely
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top