# How often are General Solutions asked in the HSC? (1 Viewer)

#### kevinsta

##### Member
I'm currently studying for 3U and was wondering how often does the HSC actually ask General Solution questions? I've never really studied them or done any questions on them, but they seem extremely rare.

#### Drsoccerball

##### Well-Known Member
I'm currently studying for 3U and was wondering how often does the HSC actually ask General Solution questions? I've never really studied them or done any questions on them, but they seem extremely rare.
They're common even in 2unit if you think about it. You MUST not memorise but rather know how to derive them.

#### InteGrand

##### Well-Known Member
They're common even in 2unit if you think about it. You MUST not memorise but rather know how to derive them.
Actually you are allowed to quote them. And they're part of MX1, not 2U.

#### keepLooking

##### Active Member
They're common even in 2unit if you think about it. You MUST not memorise but rather know how to derive them.
2unit student here, what are general solutions?

#### InteGrand

##### Well-Known Member
2unit student here, what are general solutions?
$\bg_white They're not part of 2U Maths actually (part of HSC 3U), but it's basically finding the general solution to trigonometric equations like \sin x =a.$

#### Drsoccerball

##### Well-Known Member
2unit student here, what are general solutions?
Its when you find an equation for all solutions of a trig expression for example cosx=0
General solution : $\bg_white x= \frac{\pi}{2} +\pi k$ Where k is an integer

#### keepLooking

##### Active Member
Alright, it was a bit of a jump scare, I thought I didn't finish the topics.