Quick Answers To Some Questions! (1 Viewer)

[lightning9t]

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

 

[sdx91]

not bad

 

[Mongoz]

they look rite
and confirmed that im getting 75 or lessssss

 

[SkimDawg]

Looks like I got at least 6/12 for Q10 lol. I fucked up Q5a) though.

 

[m.incognito]

4bi and ii are wrong.
It was 215 mm and 12 times.

1st zooming in - 60
2nd zooming in - 72

you've made 50 as one of your zooming ins where it's the original size.

 

[lightning9t]

4bi and ii are wrong.
It was 215 mm and 12 times.

1st zooming in - 60
2nd zooming in - 72

you've made 50 as one of your zooming ins where it's the original size.

For this question, what did everyone get?

 

[kinship]

wouldn't 4)b)i be 179? as its 179.159 on my calc =S, nearest mm would be 179 not 180? or am i just wrong lol

 

[pyjamapants]

4bi and ii are wrong.
It was 215 mm and 12 times.

1st zooming in - 60
2nd zooming in - 72

you've made 50 as one of your zooming ins where it's the original size.

Nope.
That's mincorrect. hehe haha ho ho.
It's thirteen times. The original poster [lightning9t] was correct.
I tested both 12 and 13 and 13 generated an answer larger than 400 whereas 13 did not.

 

[ywontuend]

hey what did everyone get for stationary points in question 8?

werethey plus 2 and minus 2 and o?

 

[lazyfrank]

4bi and ii are wrong.
It was 215 mm and 12 times.

1st zooming in - 60
2nd zooming in - 72

you've made 50 as one of your zooming ins where it's the original size.

i agree with this if you were to use geometric term formula you would need to make a = 60 as it is the first zoom then its as simple as applying it to the formula lol i was the only one in my school who did this so i got a bit worried hopefully 120

 

[iluvGG]

for stat points i got (0,0), (2,-16) (-2,-16). is that right???

 

[SkimDawg]

for stat points i got (0,0), (2,-16) (-2,-16). is that right???

Yeah

 

[lightning9t]

for stat points i got (0,0), (2,-16) (-2,-16). is that right???

Yup

 

[ywontuend]

for stat points i got (0,0), (2,-16) (-2,-16). is that right???

THATS WHAT I GOT!!!!


YAAAAAAAAAAAAY!!!!!!!

as u can tell i was worried...

 

[Rhanoct]

it's 215mm and n=12

 

[iluvGG]

i agree with this if you were to use geometric term formula you would need to make a = 60 as it is the first zoom then its as simple as applying it to the formula lol i was the only one in my school who did this so i got a bit worried hopefully 120

but 50 is still the first term of the series, even thought it hasnt been zoomed, right? meh. i got the same answer as OP.

edit: damn. okay i perhaps got this question wrong

 

[fryziesutton]

For this question, what did everyone get?

215mm
12 times

 

[brad616]

215mm
12 times

YESS I GOT THAT

 

[Rhanoct]

a=50 but it wants u to apply the zoom 8 times.. meaning n=9

T9 = 50. 1.2^8=215

 

[pyjamapants]

i agree with this if you were to use geometric term formula you would need to make a = 60 as it is the first zoom then its as simple as applying it to the formula lol i was the only one in my school who did this so i got a bit worried hopefully 120

Yeah I used the geometric too. But my a was 50. Because 60 is 1.2 times 50.
So my intial term was 50.

50 x 1.2 ^(8-1)

The answer was 179 to the nearest mm

For part two:

50 x 1.2 ^(13-1) gives 445

whereas

50 x 1.2 ^(12-1) gives 371.5

So n = 13 times