Maths Ext 2 Predictions/Thoughts (3 Viewers)

[BAYPALS]

I got like 136/5 or something

yes this one

 

[JesusChriiii]

wow it seems i butchered that. how many marks was it like 3?

it was 4 i think. I also used a sec sub but might've got it wrong lol

 

[Siwel]

it was 4 i think. I also used a sec sub but might've got it wrong lol

used sec sub but made sure i used not rounded limits and it ended in fractions for memory

 

[notme123]

did u guys sub in 2k-1 to prove the recurrence relation thing

triangle numbers yes

 

[astorete]

If anyone has the exam please post.

 

[O01x]

hopefully my 3 page waffle for the inequalities (where i got nowhere) would give me a few marks

 

[Jojofelyx]

i got a nice fraction. 128/5 or someshit like that i forgot

it was like 136/5 i think
Edit: whoops people already said that eek

 

[zakoht]

where did i go wrong

i created a third equation that represented the total distance/speed of the particle as one equation

 

[bigwilly69]

did u guys sub in 2k-1 to prove the recurrence relation thing

Yeh I did

 

[oredbayz]

i created a third equation that represented the total distance/speed of the particle as one equation

how do u remove time

 

[notme123]

what would an 80-85 scale to around?

 

[Siwel]

how do u remove time

yeah thats what im thinking so i made a tof equation and suybbed in and everything cancelled nice

 

[🍑 this is a peach]

how did you do the shm question

 

[Siwel]

how did you do the shm question

i think i did the v^2=n^2(a^2-x^2) for memory

 

[notme123]

ye amplitude is 5 i think, so went between 8 and -2

i think i did the v^2=n^2(a^2-x^2) for memory

(x-3)^2 btw

 

[Siwel]

ye amplitude is 5 i think, so went between 8 and -2

(x-3)^2 btw

rlly? i got between 7 and -1 then built a displacement function and when differentiated and rearranged made the acc function

 

[Siwel]

rlly? i got between 7 and -1 then built a displacement function and when differentiated and rearranged made the acc function

said a=4 since v=8 when x=0 and n=2 for memory. but then again couldve stuffed it

 

[Siwel]

the q16 a) proof though like bro didnt even know the triangle inequality was a 3d proof....

 

[zakoht]

how do u remove time

I'm going to be honest I don't remember all the algebra, my brains a little cooked. Time just cancelled out in the end, i really don't feel like grinding that algebra again sorry dude. Hopefully the official solution was same as mine and u can just look at that. Or try diddling with wolfram alpha or something.

 

[notme123]

said a=4 since v=8 when x=0 and n=2 for memory. but then again couldve stuffed it

farrrk are you kidding me. another 2 lost.