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March 15, 2026, 06:00:43 am
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Author Topic: f(x)  (Read 575 times)  Share 

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Moko

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f(x)
« on: November 04, 2012, 07:23:06 pm »
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Ok, since when can a function that is defined by an x (e.g. f(x)) not have an x in it?
Some mcq asked you to find f(x) as a function. They gave you a few hints, and I deduced that the two of the most likely possibilities were f(x)=e^x and f(x)=1. The one that fit with all the given hints was f(x)=1, but I straight away crossed it out as I thought that since the function is defined by an x (f of x) then it had to have an x in it, so I went with e^x and got it wrong  :'(

Anyone care to explain this witchery?
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TrueTears

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Re: f(x)
« Reply #1 on: November 04, 2012, 07:25:11 pm »
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f(x) = 1 -> f(x) = 1x^0 so it is a function of x
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PhD @ MIT (Economics).

Interested in asset pricing, econometrics, and social choice theory.

Homer

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Re: f(x)
« Reply #2 on: November 04, 2012, 07:37:38 pm »
+1
smart
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Bachelor of Laws/Engineering

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Moko

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Re: f(x)
« Reply #3 on: November 04, 2012, 07:58:24 pm »
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Swap minds from wednesday to next week monday TT?

Mines alright, it's pretty advanced...let me know what u think
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