Mathematics Extension 1 Exam Predictions/Thoughts (2 Viewers)

[programen]

k=14 yeah

 

[Arrowshaft]

Binomial was k=14 pretty surr

Na I got 14, I accidentally wrote 15 because I was thinking of k+1

 

[programen]

symmetry does not work here

 

[Arrowshaft]

Dang it, think I messed up with some sillies. What do you think a 94% would align to?

 

[Heresy]

Predictions for E4 cutoff?

I admit this paper was more doable than previous years. However, I definitely didnt perform the best I could today. I'm sad because i prepared hard for 3U for the past 2 years too...

Maybe 50/70, I really don't know. I'm Disappointed.

 

[StudyOnly]

For the Rcos(x- alpha) did you guys get tan^-1(sqrt6/sqrt2) and did you leave it like that when subbing back into the Rcos(x-alpha)?

 

[Arrowshaft]

Maybe 50/70, I really don't know. I'm Disappointed.

It’s alright man, same thing happened with 4u for me. Completely bombed 13 out, somehow did most of 16 but missed out on early marks. It’ll get better from here

 

[dotwingz]

For the Rcos(x- alpha) did you guys get tan^-1(sqrt6/sqrt2) and did you leave it like that when subbing back inti the Rcos(x-alpha)?

sqrt6/sqrt2 simplifies to sqrt3 which is an exact value of tan

 

[Arrowshaft]

For the Rcos(x- alpha) did you guys get tan^-1(sqrt6/sqrt2) and did you leave it like that when subbing back inti the Rcos(x-alpha)?

that’s sqrt3 which means alpha is pi/3

 

[Hithcock]

[QUOTE="TeheeCat, post: 7319008, member: 1611308748"

I admit this paper was more doable than previous years. However, I definitely didnt perform the best I could today. I'm sad because i prepared hard for 3U for the past 2 years too...
[/QUOTE]

Same here, did not do as expected

 

[StudyOnly]

sqrt6/sqrt2 simplifies to sqrt3 which is an exact value of tan

Ohhhh no I forgot tht do you think I lose a mark or two?

 

[Arrowshaft]

Ohhhh no I forgot tht do you think I lose a mark or two?

Unfortunately but did you still plug in the number into your calculator to get pi/3?

 

[Heresy]

Btw did anyone else use Implicit Differentiation for the rates question?

 

[StudyOnly]

What do you guys think 57-60 out of 70 will scale to?

 

[Arrowshaft]

What do you guys think 57-60 out of 70 will scale to?

E4 at the minimum, so maybe 90-92

 

[Arrowshaft]

you’ll be right mate, I’ve seen your thought process for maths, you’re defs an e4 student

 

[StudyOnly]

Unfortunately but did you still plug in the number into your calculator to get pi/3?

No, I just left it tan^-1(sqrt6/sqrt2) ... do you think loss of 1 or 2 marks?

 

[Arrowshaft]

No, I just left it tan^-1(sqrt6/sqrt2) ... do you think loss of 1 or 2 marks?

Only 1 mark, I’d say

 

[tillitiger]

I got 3 solutions for question 10 bcuz the domain was in between -1 and 0 and hence the sole were at x=-1, x=0 and x=somethin like -0.62

but then again, im not a nurd

 

[Arrowshaft]

I got 3 solutions for question 10 bcuz the domain was in between -1 and 0 and hence the sole were at x=-1, x=0 and x=somethin like -0.62

but then again, im not a nurd

But the domain for f(x) was x>=1 so wouldn’t the range for f-1(x) have been f(x)>=1?