Author Topic: ANY DOUBTS HERE!!!  (Read 34790 times)

Offline S.M.A.T

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Re: ANY DOUBTS HERE!!!
« Reply #285 on: August 26, 2010, 11:19:26 pm »
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?

Oops :P i read the question wrong.It says the curve passes between the points (2,200) and (2,2000) not passes through (2,200) and (2,2000).






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Offline Saladin

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Re: ANY DOUBTS HERE!!!
« Reply #286 on: August 26, 2010, 11:29:32 pm »
Oops :P i read the question wrong.It says the curve passes between the points (2,200) and (2,2000) not passes through (2,200) and (2,2000).

That happens to me a lot, especially when I am sleepy! :D

Glad to see you so active Asif! :D

Offline S.M.A.T

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Re: ANY DOUBTS HERE!!!
« Reply #287 on: August 27, 2010, 09:55:19 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 :)

when x=2
y=2^n

The curve passes through a point with x-coordinate 2 and y-coordinate   200<y<2000

Therefore,
200<(2^n)<2000
(log(200)/log(2))<n<(log(2000)/log(2))
7.64<n<10.97
Since n is a integer,so n=8 or 9 or 10


"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

Alpha

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Re: ANY DOUBTS HERE!!!
« Reply #288 on: August 27, 2010, 02:37:30 pm »
Oops :P i read the question wrong.It says the curve passes between the points (2,200) and (2,2000) not passes through (2,200) and (2,2000).






Oh okay.  :)