"does anyone remember the actual integration question"

Integrated it was something like: [a number - (1/3)X^3 + (3x^4)/4] Between 1 and -2 so differentiate that and you might get something close to the original

Then the area of the triangle was (0.75*24)/2 which I spent far too long doing in different ways to reassure myself it did actually equal 9 :wink:

Reply 205

timtjtim

Original post by osshhas

I did the trapezium rule but didnt get that, prety sure I was wrong anyway

Yes, trapezium rule was unnecessary here - you had the internal.

Reply 206

night_chxnnels

If I put decimals 3.5 instead of 7/2 and 10.25 instead of whatever it was will I still get the mark???? In the completing the square question. I didn't realise decimals are not rational ughh

Reply 207

timtjtim

Original post by yelash

Not just me then! They'd given us so many fractions, "9" felt to soft :P

Reply 208

BenAtkinson

For the questions most are asking:
Surds
a) 45
b) 75 - 32 root 5
Integration
b) i) 20.25 or 81/4
ii) You had to find area of triangle (=9). Shaded region = 11.25
Circles
b) C was midpoint AB. You could use this to finid B = (7,-12)
d) CT = 4. Using pythag.Anymore questions, feel free to ask.

Reply 209

yelash

"Not just me then! They'd given us so many fractions, "9" felt to soft :P "

Yeah I checked my multiplication so many times throughout the paper. Still had time to read the brand new formula books as well XD

what was the equation of the quadratic we had to draw? It was the question I worried about the most because my maximum didn't look obviously past where x=0. I'm hoping as it was only 2 marks they don't care, and besides the only way I could see of working out the max point was by completing the square which got me about 10.5 when X=1, so max point after the y-intercept?

(edited 7 years ago)

Reply 210

Jacobisswaggy

What did people get for translation vector?

The answer for the integration question was 45/4 or 11.25 for anyone asking.

(edited 7 years ago)

Reply 211

kxndraco

Original post by WhiteTigerKURD

I got 11.25

I got 27/12 = 2.25

Reply 212

BenAtkinson

Original post by Jacobisswaggy

What did people get for translation vector?

The answer for the integration question was 45/4 or 11.25 for anyone asking.

Translation

1/2
41/4

Reply 213

ItsKiara

i enjoyed that paper so much i'll probably be doing it again next year!!! :smile:

))

))))))

)))

Reply 214

df97

Original post by Jacobisswaggy

What did people get for translation vector?

The answer for the integration question was 45/4 or 11.25 for anyone asking.

I put "Translated by vector [1/2, 41/4]"

Reply 215

Jacobisswaggy

Original post by BenAtkinson

Translation

1/2
41/4

You sure it was positive 41/4? I put -41/4.

Reply 216

voltz

Original post by df97

I put "Translated by vector [1/2, 41/4]"

I think i put -41/4

Reply 217

timtjtim

Original post by BenAtkinson

CT was 9 not 4 (AT was 4) - see image attached (√65^2 + 4^2 = 81. √81 = 9)

var ctx = document.getElementById("canvas").getContext("2d"); // #text4142-2-6 ctx.lineJoin = 'miter'; ctx.lineCap = 'butt'; ctx.lineWidth = 1.000000; ctx.fillStyle = 'rgb(0, 0, 0)'; ctx.font = "normal normal 40px sans-serif"; ctx.fillText("9", -2.519531, 29.687500);