Author Topic: ANY DOUBTS HERE!!!  (Read 34852 times)

Offline ruby92

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Re: ANY DOUBTS HERE!!!
« Reply #270 on: June 09, 2010, 08:36:55 pm »
m.j 2009 20

Offline falafail

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Re: ANY DOUBTS HERE!!!
« Reply #271 on: June 10, 2010, 04:14:10 am »
isn't this thread a bit.. erm.. redundant?  ::)
and tbh, i find it unfair that only edexcel stuff get sticky threads? why can't edexcel people just post normal threads like the rest of us? >:[

but oh well, it's not like i'll be doing a levels anytime soon.

Offline mdymmm

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Re: ANY DOUBTS HERE!!!
« Reply #272 on: August 22, 2010, 10:19:49 pm »
hey every1 .. can any1 help me with this question ..

The diagram shows the graph of y=x^n where n is an integer.
Given that the curve passes between the points (2,200) and (2,2000), determine the value of n.

I just drew the curve roughly .. its not really accurate.
Thanks in advance :)

Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #273 on: August 22, 2010, 10:24:11 pm »
hey every1 .. can any1 help me with this question ..

The diagram shows the graph of y=x^n where n is an integer.
Given that the curve passes between the points (2,200) and (2,2000), determine the value of n.

I just drew the curve roughly .. its not really accurate.
Thanks in advance :)

The value is 3, because it is a cubic curve.

Offline S.M.A.T

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Re: ANY DOUBTS HERE!!!
« Reply #274 on: August 23, 2010, 07:45:58 am »
hey every1 .. can any1 help me with this question ..

The diagram shows the graph of y=x^n where n is an integer.
Given that the curve passes between the points (2,200) and (2,2000), determine the value of n.

I just drew the curve roughly .. its not really accurate.
Thanks in advance :)

how can a graph of y=x^n pass through (2,200) and (2,2000) at the same time ??? ???


"A man's life is interesting primarily when he has failed - I well know. For it's a sign that he tried to surpass himself." Clemenceau, Georges

Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #275 on: August 23, 2010, 11:59:10 am »
how can a graph of y=x^n pass through (2,200) and (2,2000) at the same time ??? ???

I have no idea either, but that definitely looks like a cubic graph.

nid404

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Re: ANY DOUBTS HERE!!!
« Reply #276 on: August 23, 2010, 01:15:17 pm »
Do you know the answer?

Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #277 on: August 23, 2010, 01:52:06 pm »
Well n is defo 3. because it is a cubic graph.

Offline Ghost Of Highbury

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Re: ANY DOUBTS HERE!!!
« Reply #278 on: August 25, 2010, 02:23:53 pm »
How does the brightness of the spots on the screen (fringes) , the separation, and the number of fringes change as we

i) change the width of each slit but the separation of the slit is same

ii) The separation of the slits is increased.
divine intervention!

Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #279 on: August 26, 2010, 12:39:58 pm »
How does the brightness of the spots on the screen (fringes) , the separation, and the number of fringes change as we

i) change the width of each slit but the separation of the slit is same

ii) The separation of the slits is increased.

I forgot about these....

The thing with exams is that once you're done you just forget what you did...

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Re: ANY DOUBTS HERE!!!
« Reply #280 on: August 26, 2010, 12:45:44 pm »
how can a graph of y=x^n pass through (2,200) and (2,2000) at the same time ??? ???

The passes twice where x=2.

Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #281 on: August 26, 2010, 12:47:26 pm »
How does the brightness of the spots on the screen (fringes) , the separation, and the number of fringes change as we

i) change the width of each slit but the separation of the slit is same

ii) The separation of the slits is increased.

This may be of some use.

Offline S.M.A.T

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Re: ANY DOUBTS HERE!!!
« Reply #282 on: August 26, 2010, 04:21:01 pm »
The passes twice where x=2.

As far as  i know a graph of y=x^n cannot pass through these points at the same time.


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Alpha

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Re: ANY DOUBTS HERE!!!
« Reply #283 on: August 26, 2010, 04:40:45 pm »
As far as  i know a graph of y=x^n cannot pass through these points at the same time.

Do you know the power (n)?

I know you're thinking about the arc shaped curve. That arc can make a more acute bend. Can it?

Offline Ghost Of Highbury

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Re: ANY DOUBTS HERE!!!
« Reply #284 on: August 26, 2010, 06:43:45 pm »
y = x^n passing through (2,200) and (2,2000) doesnt seem right.

for any n belongs to R...no matter how large the value of y is ...the graph wont ever become parallel to the y-axis.

divine intervention!