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November 1st, 2009, 03:35 PM
| | Newbie | | Join Date: Nov 2009 Location: Luton, England
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| |  Exponential functions help
1) Find the coordinates of any stationary point on the curve y = x - e^(x-1)
i got (-1, -1-e^-2) as being one point is that right?
2)
fine the range of values for which the function f(x) = 2x + e^(1-2x) is increasing
if you could help me with either that would be great, thanks |
November 1st, 2009, 04:23 PM
|  | MHF Contributor | | Join Date: Jun 2008 Location: North Texas
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Quote:
Originally Posted by perryman  1) Find the coordinates of any stationary point on the curve y = x - e^(x-1)
i got (-1, -1-e^-2) as being one point is that right?
no
2)
fine the range of values for which the function f(x) = 2x + e^(1-2x) is increasing
determine the interval(s) of x where f'(x) > 0
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November 2nd, 2009, 02:47 AM
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Quote:
Originally Posted by skeeter determine the interval(s) of x where f'(x) > 0 |
HOW!?!?! |
November 2nd, 2009, 03:34 AM
|  | Flow Master | | Join Date: Dec 2007 Location: Zeitgeist
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Quote:
Originally Posted by perryman HOW!?!?! | First get the derivative. Can you do that? (See here for the approach: Exponential functions help). Please show all your working.
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