Maths Extension 1 Predictions/Thoughts (5 Viewers)

[bruhmoment.]

i reckon 48-50 out of 70 scales to 90

i legit calculated and think i got that, hopefully its true

 

[maleficientplatform]

What did yall get for multi q10

 

[K1uggie]

 

[K1uggie]

What did yall get for multi q10

I just guessed C. All i knew was that it wasnt A

 

[Dontcallmedude]

The probability I got all mcqs right is (1/4)^10

 

[lounjg]

I just guessed C. All i knew was that it wasnt A

How was it not A? They might cancel out

 

[Dontcallmedude]

Woo hoo boys we done. I'm so hyped ngl. Eco then hsc is over for me. We gonna all be free soon. Good job everybody

 

[cute lil monkey]

Don’t worry boys let’s focus on our next test!

 

[buckminsterfullerene]

How was it not A? They might cancel out

domain was 0 to 2pi, they cant cancel since no negative theta

 

[peepeepoopooo]

How was it not A? They might cancel out

I got 4 pi because they are in the 4th quadrant so it was like 2pi-arctan(whatever) and the arctans cancelled out

Probably incorrect lol but at least I tried

 

[Dontcallmedude]

How was it not A? They might cancel out

For mcq 10. I'm thinking it has something to do with angles like sin(Pi/18) = sin(17pi/18). Don't recall the question too well tbh. Caffeine crash right now

 

[Dontcallmedude]

Considering ASTC. then angles change

 

[K1uggie]

How was it not A? They might cancel out

it said a,b,c,d > 0, adding them cant give 0

 

[Dontcallmedude]

I got 4 pi because they are in the 4th quadrant so it was like 2pi-arctan(whatever) and the arctans cancelled out

Probably incorrect lol but at least I tried

Peepeepoopooo is wise

 

[jln32]

I thought Q10 was =pi because of the rule that arctan(x)+arctan(1/x)=pi/2

 

[loading....]

How was it not A? They might cancel out

This graph is for a=b=1. You get the exact same graph by shifting by a factor of 2pi. Hence if we add all the angles we get 4pi which i believe is option D for Q10.

 

[Ethan Pham]

q10 is D

 

[Ethan Pham]

hopefully I can state rank again

 

[2azn4u]

My solutions:

Dropbox

www.dropbox.com

 

[Edward34245]

I just guessed C. All i knew was that it wasnt A

I think it was a. If you use the Rsinx/Rcosx shortcut you could arctana/b-arctana/b. So I think they cancelled out