Section I: Multiple Choice (1 Viewer)

[OzKo]

Share your responses here.

 

[pakman_au]

1.A
2.A
3.A
4.B
4.A
7.C
8.C
9A
10.T
expeCting aBotu 7-8

 

[braintic]

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

 

[angrycookies]

1.A
2.A
3.A
4.B
4.A
7.C
8.C
9A
10.T
expeCting aBotu 7-8

sorry to say, but you got the first question wrong.

 

[Swaan]

Anyone know the answer to q10?

 

[emilios]

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

exact same as mine.

i think these are the correct ones fellas

 

[emilios]

Anyone know the answer to q10?

C.

use distance formula on both and set them equal. you get it out with some mild algebra bashing

 

[alex4nder]

5 can't be B as the three roots must multiply for positive 42

 

[panakap]

5 can't be B as the three roots must multiply for positive 42

They have to times for -42, since the product of the roots is -d/a

 

[emilios]

5 can't be B as the three roots must multiply for positive 42

product of roots is -d/a thus = -42.

 

[alex4nder]

They have to times for -42, since the product of the roots is -d/a

Oh god... Forgot about factor = (x - the root)
Wow.

 

[Swaan]

C.

use distance formula on both and set them equal. you get it out with some mild algebra bashing

I left it to the end but ran out of time and guessed C, yassss

 

[orcevalm]

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

yea i got pretty much the same except i guessed q10 hhah

 

[braintic]

You don't need any serious algebra for Q10.
Assume a>0, b>0, b>a (or the other way round if you like), then draw a diagram.
By symmetry you can see that it must pass through the origin, eliminating B and D.
Then you just need to choose the option with the correct gradient.

 

[mreditor16]

You don't need any serious algebra for Q10.
Assume a>0, b>0, b>a (or the other way round if you like), then draw a diagram.
By symmetry you can see that it must pass through the origin, eliminating B and D.
Then you just need to choose the option with the correct gradient.

did this as well

 

[mreditor16]

I've provided some explanations for MC here --> http://community.boredofstudies.org/1125/mathematics-extension-1/330064/hmmm.html

 

[rated]

from the looks of it I got 7/10
D
A
C
D
B
B
B
C
C
B

 

[leruns]

Not sure how I went...

1) D
2) A
3) C
4) D
5) B
6) B
7) B
8) D
9) C
10) B

 

[hi im trash]

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10. C

same x)

 

[bale]

1. D
2. A
3. C
4. D
5. B
6. B
7. A
8. D
9. C
10 d