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    small factorisation problem I'm stuck on:

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




    hints or tips much appreciated !
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    Do you mean y=x^n ?
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    yes, sorry
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    (Original post by Naomiimoan)
    Do you mean y=x^n ?

    little help?
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    (Original post by minimalme)
    little help?
    Well don't take my word for it because I haven't really come across this kind of question before but I used trial and error..
    I n=9 by making x=2 (as it's in the coordinates) which gave me y=2^n
    The question says y is between 200 and 2000 so I just did 2x2x2... Until I got a number that was close to 2000-200 which I now realise is kinda silly...

    You could try something like (log base 2 of 2000) - (log base 2 of 200) which equals log base 2 of 10.

    Sorry I'm on the overground which no calculator..

    Edit: and it doesn't help that I haven't done this before..why is no one else helping you..
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    the answer is 9. i found it out by trial and error. but the log b 2 is the right way to go. it is one of those questions where it so easy you actually over thinking. the weather is not helping either getting me all hot!

    thanks for ur efforts
 
 
 
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