Maths Extension 2 Predictions/Thoughts (5 Viewers)

[Hudz777]

yall know how on earth to do 15b ii?

I couldn’t get i) but i got ii). just said |b| = b.b. and expanded lhs and rhs and they equaled. was hella working but yeah

 

[Hudz777]

the r(t) function is for both up and down coz its displacement from origin, not dist covered

oh mother truckerrr

 

[synthesisFR]

I couldn’t get i) but i got ii). just said |b| = b.b. and expanded lhs and rhs and they equaled. was hella working but yeah

I didn’t have time to expand part ii and stuff rip but part i was ez for me

 

[synthesisFR]

Anyways who wants to do gender studies degree with me @ExtremelyBoredUser

 

[Hudz777]

so sureeeely, a 60 raw is an e4…. lets go boizzz

 

[synthesisFR]

I found it harder than 2022 I did well in that

 

[synthesisFR]

NAH bRuh dont do that i dont want to know

 

[synthesisFR]

it was 5pi for the period right

YES I LOVE YOU

 

[scaryshark09]

can someone give mc answers?

 

[Trebla]

@Trebla can you explain 15.a)ii)

When you handle the double angle with a substitution your limits would change from 0 to pi. However, note that integrating a sine function (and subsequently it’s powers) from 0 to pi is the same as twice that from 0 to pi/2 by symmetry (see the graph). You can show this algebraically but that’s the rough idea of it.

That’s why it’s 4 marks because of those extra steps.

 

[dsakvyilsa]

i didnt even have time to think about the mc's I think I just guessed most of them i dont even want to know

 

[Aminza21]

aye anyone get q5? c right?

 

[=)(=]

I just fully expanded the LHS and RHS separately (like LHS=… RHS=…) which then showed that LHS=RHS

ayee same

 

[carrotsss]

aye anyone get q5? c right?

nope they are the same line

 

[scaryshark09]

what did you get for question 6,7,8,9,10 mc

 

[scaryshark09]

nope they are the same line

no they arent, how???

 

[=)(=]

i remeber for the locus i got b like the region thing

 

[=)(=]

no they arent, how???

They are they pass through same point and direction vector differ by scalar

 

[=)(=]

lowkey i spent so much time on 15ii and still didnt get it out and didn't even get iii out
I barely had time to do 16 aii and iii and c such a bloody bummer

 

[gunnerfan99]

no they arent, how???

solve for intersection