Maths Extension 1 Predictions/Thoughts (2 Viewers)

[lolcti]

I knew it was over for my when I was struggling to even find the square root of a complex number. Thank goodness I didn’t keep it

ts so real

 

[v.tex]

Bro 24 guys had such an easy hsc for ext 1 and 2 bru.... Now we are gonna get cooked

 

[bigbird102]

Bro 24 guys had such an easy hsc for ext 1 and 2 bru.... Now we are gonna get cooked

i have a feeling they're gonna pull out like a combinatorics or probability Q14.

 

[BionicMango]

Ext 2 wasn’t too hard, ext 1 probably won’t be either

 

[cooked101]

what are u all studying with???
which past papers and questionss?
pls i need help

 

[cheesynooby]

what are u all studying with???
which past papers and questionss?
pls i need help

definitely do the hsc papers if u havent yet
and then do more practice questions (either from trials or specific to topics u r weaker in)

 

[ros545]

Hi y'all,
For ext 1, do we need to know how to solve trig induction questions. I don't think it's been assessed before but I've seen it in a lot of trial papers. E.g. a question like this. Do you reckon we need to know this? @coolcat6778 @C2H6O @tywebb . Thanks

 

[cheesynooby]

Hi y'all,
For ext 1, do we need to know how to solve trig induction questions. I don't think it's been assessed before but I've seen it in a lot of trial papers. E.g. a question like this. Do you reckon we need to know this? @coolcat6778 @C2H6O @tywebb . Thanks

it is technically in the syllabus combining "prove results for sums" (by induction) and compound angles so yeahh

 

[C2H6O]

Hi y'all,
For ext 1, do we need to know how to solve trig induction questions. I don't think it's been assessed before but I've seen it in a lot of trial papers. E.g. a question like this. Do you reckon we need to know this? @coolcat6778 @C2H6O @tywebb . Thanks

yeah i would but its not that hard just know your way around compound angles and other trig stuff and youll probably be fine

 

[v.tex]

better bloody e4 this exam after getting a shit mark in ext2

 

[ros545]

Hi y'all,
For ext 1, do we need to know how to solve trig induction questions. I don't think it's been assessed before but I've seen it in a lot of trial papers. E.g. a question like this. Do you reckon we need to know this? @coolcat6778 @C2H6O @tywebb . Thanks

By the way, I wasn't able to prove this past n=k+1, could someone please help me with it? Thanks

 

[cheesynooby]

By the way, I wasn't able to prove this past n=k+1, could someone please help me with it? Thanks

which part were u struggling with?
u should hopefully be able to get LHS of n = k+1
= 1- cos(2kq) + 2sin(q)sin((2k+1)q) all over 2sinq
which simplifies to the RHS using products to sums

 

[v.tex]

Binomial probability will likely be my downfall

 

[lucas10champ]

Binomial probability will likely be my downfall

bro just study it then

 

[RedDragonStar1]

Binomial probability will likely be my downfall

Binomial everything is my downfall

 

[tiramisu...]

how hard can t formula get.. like i havent seen it in hsc papers for a while

 

[ros545]

Y'all, just confirming, for binomial distribution questions, is it fine if you use either sample proportioning method or the count method to solve the q's, particularly to obtain z-scores?
Thanks

 

[Trebla]

how hard can t formula get.. like i havent seen it in hsc papers for a while

Suppose that



Find the value(s) of .

Using t-formula will get you there quicker than brute force (or question can ask you to use t-formula).

 

[tiramisu...]

Suppose that



Find the value(s) of .

Using t-formula will get you there quicker than brute force (or question can ask you to use t-formula).

whats the thing where it's like u have to test 180 or sm and see if it works like u have to sub something into something (or maybe i'm getting stuff mixed up)

 

[Trebla]

whats the thing where it's like u have to test 180 or sm and see if it works like u have to sub something into something (or maybe i'm getting stuff mixed up)

The t-formula



is only valid when t is actually defined.

Notice that there are certain angles where t is undefined. So it possible your trig equation happens to work for those undefined values of t, in which case using the t-formula will only retrieve a subset of the full solutions.