2 unit maths revision (2 Viewers)

Joined
Dec 31, 2009
Messages
4,741
Location
sarajevo
Gender
Female
HSC
2015
Uni Grad
2017
What happened to MrBrightside's marathon thread? Anyway,

New Question:



Find the area of the shaded region.
 

Bored Of Fail

Banned
Joined
Dec 15, 2010
Messages
186
Gender
Male
HSC
N/A
Seriously the first time I saw that question I thought u needed 3unit circle geometry to do it, because you are given the radius , you know that a line from the centre to a chord bisects the chord, then you can find the angle AOB , then you can can find the shade area by using area of whole circle - area of minor segment
 

hscishard

Active Member
Joined
Aug 4, 2009
Messages
2,033
Location
study room...maybe
Gender
Male
HSC
2011
Seriously the first time I saw that question I thought u needed 3unit circle geometry to do it, because you are given the radius , you know that a line from the centre to a chord bisects the chord, then you can find the angle AOB , then you can can find the shade area by using area of whole circle - area of minor segment
Banned again. Lol
 

FriedRice1

Banned
Joined
Oct 16, 2010
Messages
8
Gender
Male
HSC
2013
but none of the moderators can take a second out to do their job and ban them
 

FriedRice1

Banned
Joined
Oct 16, 2010
Messages
8
Gender
Male
HSC
2013
Differentiate sec^3 (3x) with respect to x. Thats "sec cubed 3x" NOT "sec of (3x) cubed"


Should add another part to the question above, to make sure we are testing a reasonable depth of understanding and making it somewhat difficult lol.

Hence find the values of x in the domain -2pi<=x<=+2pi for which the curve y= sec^3 (3x) has stationary points
 

mitchy_boy

blue
Joined
Jun 8, 2009
Messages
1,464
Location
m83
Gender
Male
HSC
2010
Differentiate sec^3 (3x) with respect to x. Thats "sec cubed 3x" NOT "sec of (3x) cubed"


Should add another part to the question above, to make sure we are testing a reasonable depth of understanding and making it somewhat difficult lol.

Hence find the values of x in the domain -2pi<=x<=+2pi for which the curve y= sec^3 (3x) has stationary points
 

slyhunter

Retired
Joined
May 17, 2009
Messages
6,803
Gender
Male
HSC
2011
but none of the moderators can take a second out to do their job and ban them
Lol, this thread is for posting questions and answers, not a diary to vent out your fail in.
 
Last edited by a moderator:

Users Who Are Viewing This Thread (Users: 0, Guests: 2)

Top