Quick Answers To Some Questions! (1 Viewer)

[ttelfer]

Some corrections.. quite sure..
3. b) ii) 1/2ln(2)
4. c) iv) 32/3
NOT SURE: For 7. c) ii) i got 7/27
And overall... I think I have lost 3 marks!! from Silly mistakes! GAH!!

you're right about 4c. i can see what i did wrong now.. my god that was stupid. i only found half of the area.
and yeah, 7c. is 7/27. i edited it. copied my writing wrong.

 

[teurino]

woot Q9 b) ftw

 

[plam90]

isnt 4b) ii) 13? not 12

 

[tau281290]

So for question 4b what will the marks be if 179 and 13 are written? 1,2 or 3 out of 4?

Maybe 2 at best?

 

[5647382910]

was the answer to 10b sqrt (1/2) or sqrt (I/2)

 

[5647382910]

was the answer to 10b sqrt (1/2) or sqrt (I/2)

LOL i meant was the answer to 10b sqrt (1/2) or sqrt (L/2)

 

[Timothy.Siu]

L/sqrt2

 

[ewasemma]

this is what i got.
wrote the answers in my booklet in the extra ime i had.
correct me if i'm wrong, please.

1.)a.) 1.62
b.) (3x-2)(x+1)
c.) (n+2)/(n^2+n)
d.) x= 2/1/2 and -1
e.) 1 + 3root3
f.) 903

2.)a.)i.)18x(x^2+3)^8
ii.)x(2lnx +1)
iii.)((x+1)cosx-sinx)/(x+4)^2
b.)x+2y-14=0
c.)i.) ln(x+5) + c
ii.) 1/3

3.)a.)ii.) (3,5)
iii.) root5
v.) 8
b.)i.) -tanx
ii.) 1 - ln(1/root2)

4.)b.)i.)215
ii.)12
c.)i.)(0,3)
ii.)(0,5)
iv.)5/1/3 (SHOULD ACTUALLY BE 10/2/3)

5.)a.)y=x + 2cos3x + 5
b.)i.) (-1/2)<x<(1/2)
ii.) 19/40
c.)i.)6000
ii.)(ln(1/6))/-6
iii.)-298.63

6.)a.) (3pie)/4 and (-3pie)/4
b.)i.)20
ii.)t=10
iii.)t=6
iv.)493/1/3
c.)(18/3/4)pie

7.)a.) x= e^3 or e^-1
b.)ii.)(6/2/3)pie
c.)ii.)7/27
iii.)4/9

8.)a.)iii.)max(0,0) min(2,-16),(-2,-16)

9.)a.)i.)0.0225
ii.) 0.17
b.)i.)TOO LONG TO TYPE.
ii.)975.85
c.)ii.)I GOT THIS WRONG.

10.)a.)5ln5-4
b.)ii.)x= l/root2
iii.) s(root2 -1)

Im not sure if you accidently typed it wrong or whatever but im pretty sure that 7c)ii) is 7/27 however if i am wrong feel free to explain how u got that answer

 

[Rut Rut]

shouldnt 4)b)ii) be 13 as 12 only results in 371.5mm

 

[5647382910]

L/sqrt2

ahhhhhhhhhhhhhhhhhhhhh fukkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
fuk fuk fuk
shit
i put my heart into that q and i fkd it up
but still i proved it was min by showuin second deriviative is greater than zedro
wat can i get outa 3?

 

[r.uss]

Just wondering... In question 1, the simplify fraction one.... am I going to lose a mark because I left the denominator as n(n+1)?

You see, going off everyone's answers, I've nailed the harder questions, and it would be a crying shame if got 119/120 for a damn fraction.

I have a bad feeling about this....

 

[alez]

Just wondering... In question 1, the simplify fraction one.... am I going to lose a mark because I left the denominator as n(n+1)?

You see, going off everyone's answers, I've nailed the harder questions, and it would be a crying shame if got 119/120 for a damn fraction.

I have a bad feeling about this....

i did the same thing
doubt we'll lose marks, it was only a 2 mark question or whatever
eh whatever

 

[lalaka]

Q.4b)i) 180mm
ii) > 12.4 = 13 times
Q.5
a) y = x + 2cos3x + 5
b)i) -1/2 < x < 1/2
ii) 19/40
c) iii) -298 lux/m
Q.6. b) iv) 1480/3
c) 18/3/4 (pi)
Q.7. b)ii) 20(pi)/3
Q.8. iv) looks like two boobs hanging down
Q.9. b)ii) 975.85
c)ii) (5kb^4)/12 (below the x-axis)
Q.10. a) 5ln5 - 4
b)ii) x = l/squareroot(2)
iii) MP = s(l - x)/x (sub in x = l/squareroot(2)

Please correct me if I'm wrong, just quickly done

R u sure you got Q.8. iv) looks like two boobs hanging down cause i got it to maaaaaaaan

 

[coldplay3r]

crap i did shit