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## MATHS EXAM 2005 discuss answers etc.

### HatingHighers

Posted 20 May 2005 - 12:47 PM

Paper 1:

1. y = root3(x+2)

2)a) (0,2)

b) 10

3)a) (10,5,3)

b) -2 5 3 (in component form)

4) (3x-1)^2 + 7

b)i) (1/3, 7)

ii) h greater than or equal to 7

5) 8cosx(1+2sinx)^3

6)a) k = -1/4

b)i) u1 = 3m+5, u2 = 3m^2 + 5m + 5

ii) m = -2

7)a) a = 4, b = 5

b) x greater than 4

8. ----> didnt write answers on sheet, but stationary points were 0 and 7/3. 7/3 was irrelevant to the question so do a nature table for 0 and I found out it was a falling point of inflection. blah blah blah

9) didn't write answer on paper. first i put cos2x = 2cos squared x - 1 and worked out values for cosx. Then put cos2x intot he sin squared x formula

10)a) 2sin(x - pi/3)

b) Graph

11)a) y squared + (x-t) squared = 4

b) root 5

1. y = root3(x+2)

2)a) (0,2)

b) 10

3)a) (10,5,3)

b) -2 5 3 (in component form)

4) (3x-1)^2 + 7

b)i) (1/3, 7)

ii) h greater than or equal to 7

5) 8cosx(1+2sinx)^3

6)a) k = -1/4

b)i) u1 = 3m+5, u2 = 3m^2 + 5m + 5

ii) m = -2

7)a) a = 4, b = 5

b) x greater than 4

8. ----> didnt write answers on sheet, but stationary points were 0 and 7/3. 7/3 was irrelevant to the question so do a nature table for 0 and I found out it was a falling point of inflection. blah blah blah

9) didn't write answer on paper. first i put cos2x = 2cos squared x - 1 and worked out values for cosx. Then put cos2x intot he sin squared x formula

10)a) 2sin(x - pi/3)

b) Graph

11)a) y squared + (x-t) squared = 4

b) root 5

### KhalidBoussouara

Posted 20 May 2005 - 12:47 PM

I almost got stuck at that question with the dot product nonsense. However I then noticed the word "equilateral" which made the answer perfectly clear.

### HatingHighers

Posted 20 May 2005 - 12:58 PM

bluh, got the maximum wrong for Q8 - 0 was the maximum point. Think I got the minimum right though, so I'll maybe only lose a couple of marks.

### *Suz*

Posted 20 May 2005 - 01:08 PM

Im not suprised i got the reccurance relations question wrong on paper 1, was very confused with that one. Also noticed a few marks here and there ive lost....ah wells, hopefully the 8 markers, 7 markers etc that i got right will balance out the odd 1 mark incorrect ones

### tupacshakur

Posted 20 May 2005 - 02:13 PM

QUOTE(Kirsty @ May 20 2005, 02:03 PM)

is it possible to find out your results BEFORE 10th august by emailing SQA and pleading with them to let you know what you got or by asking someone u know who works there?

someone i know claimed they did that through someone they knew working there. Is it true?