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Higher Maths 2006 - HSN forum - Page 3

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Higher Maths 2006


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#41 SncZ

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Posted 19 May 2006 - 12:13 PM

wait so.... last question on paper 2, max 128, min 32 or something like that...

is that right or wrong ?

#42 rscott

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Posted 19 May 2006 - 12:13 PM

QUOTE(Allana @ May 19 2006, 01:09 PM) View Post

QUOTE(los_angelino @ May 19 2006, 01:03 PM) View Post

QUOTE(maz69 @ May 19 2006, 01:02 PM) View Post

for the last question on paper 2 i got

128 for the greatest value when

and 32 for the smallest value

dunno if its right tho


i got that too... unfortunately it's wrong (because of the boundaries i think) but we should hopefully get 6/7 marks out of 8 for it!


That's the right answer. smile.gif



Hmm, I don't think it is, because the value 128 comes from using x= -2, which is outwith the boundaries.

#43 Dr-F

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Posted 19 May 2006 - 12:13 PM

QUOTE(nathanm @ May 19 2006, 01:08 PM) View Post

QUOTE(Dr-F @ May 19 2006, 01:07 PM) View Post

I completele sh*gged up the simultaneous equations in q.1. Feel ashamed to have been sitting higher maths just for that lol


i did that as well...but only cause i f**ked up part b


High 5 lol. That was the same reason I did it. At least now I can look forward to not having any exams left...I'm actually mentally exhausted from 4 exams in the last 3 days.

#44 SncZ

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Posted 19 May 2006 - 12:14 PM

made sense to me... differentiated and then table of signs... someone i know integrated :/

#45 maz69

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Posted 19 May 2006 - 12:14 PM

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?

#46 AM4R

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Posted 19 May 2006 - 12:15 PM

i got it equal 0 when i used b^2 - 4ac
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#47 Amna55

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Posted 19 May 2006 - 12:16 PM

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?

Q3B i got Q (4,-3) but probaly wrong sad.gif

#48 celticfcz

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Posted 19 May 2006 - 12:16 PM

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?


i subbed it in and it worked as i got a repeated root and then just got the y-value.

#49 maz69

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Posted 19 May 2006 - 12:17 PM

QUOTE(AM4R @ May 19 2006, 01:15 PM) View Post

i got it equal 0 when i used b^2 - 4ac


maybe i just got the wrong answer in part (a)... what did u get as the equation of the tangent?

#50 celticfcz

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Posted 19 May 2006 - 12:17 PM

QUOTE(Amna55 @ May 19 2006, 01:16 PM) View Post

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?

Q3B i got Q (4,-3) but probaly wrong sad.gif


same i think thats what i got!

#51 rscott

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Posted 19 May 2006 - 12:18 PM

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


You have to set the two equations equal (the equation of the tangent from part ( a ) and the equation you are given in part B)

Then you solve and get only one value for x, which means it is also a tangent to this curve. You substitute the value of x into of the the equations to get the co-ordinates of Q.

#52 Joel

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Posted 19 May 2006 - 12:18 PM

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post
QUOTE(Joel @ May 19 2006, 01:12 PM) View Post
Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.
i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?
I'm sure there's a mistake in the paper. The equation of the parabola would need to be -x^2 + 10x - 25 for the line to be a tangent, would it not?

#53 AM4R

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Posted 19 May 2006 - 12:18 PM

QUOTE(celticfcz @ May 19 2006, 01:17 PM) View Post

QUOTE(Amna55 @ May 19 2006, 01:16 PM) View Post

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?

Q3B i got Q (4,-3) but probaly wrong sad.gif


same i think thats what i got!


I think i got that too

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#54 Amna55

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Posted 19 May 2006 - 12:19 PM

QUOTE(maz69 @ May 19 2006, 01:17 PM) View Post

QUOTE(AM4R @ May 19 2006, 01:15 PM) View Post

i got it equal 0 when i used b^2 - 4ac


maybe i just got the wrong answer in part (a)... what did u get as the equation of the tangent?

for 3a) i got y=2x-11 blink.gif

#55 Blondie

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Posted 19 May 2006 - 12:19 PM

I asked my teacher what I'd need to get into AH, and her reply was, "Don't worry, I'll get you in anyway." Hah. Free entry into AH Math! Now... is that a good or bad thing? o.O
-Blondie.

Whoa, I actually have something to put down here!

Crafting Journal!

#56 Nathan

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Posted 19 May 2006 - 12:20 PM

QUOTE
I'm sure there's a mistake in the paper. The equation of the parabola would need to be 

\begin{align*}-x^2 + 10x - 25\end{align*}

for the line to be a tangent, would it not?


No, i got an answer that fitted with the graph...it was (4,-y) ...cant remember what y was though blink.gif

#57 Adam

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Posted 19 May 2006 - 12:20 PM

QUOTE(AM4R @ May 19 2006, 01:18 PM) View Post

QUOTE(celticfcz @ May 19 2006, 01:17 PM) View Post

QUOTE(Amna55 @ May 19 2006, 01:16 PM) View Post

QUOTE(maz69 @ May 19 2006, 01:14 PM) View Post

QUOTE(Joel @ May 19 2006, 01:12 PM) View Post

Would somebody be able to give me their answer for Question 3, Part b from Paper II please? I thought there was a mistake when I saw the question, but perhaps I'm wrong.


i couldnt get the answer to part 3 (b) either!

i subbed in the answer i got to part (a) into the equation given in part (b) then tried to do the discriminant and then make it equal to zero but got sumthin like 5 instead?!?

Q3B i got Q (4,-3) but probaly wrong sad.gif


same i think thats what i got!


I think i got that too


annnnnnnd me.

#58 AM4R

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Posted 19 May 2006 - 12:20 PM

do you think they'll lower the mark to get an A instead of 76% tongue.gif
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#59 Nathan

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Posted 19 May 2006 - 12:20 PM

that's what i got... (4,-3) biggrin.gif

#60 rscott

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Posted 19 May 2006 - 12:21 PM

What did everyone get for Q. 4, paper II ?

I got the radius of the other circle as root 13, so I said the radius of the larger circle was 5?





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