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September 22, 2025, 02:01:42 am

Author Topic: Expressing a linear relationship as a function  (Read 2316 times)  Share 

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alondouek

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Expressing a linear relationship as a function
« on: April 03, 2013, 03:31:27 pm »
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Having a major derp moment for STA1010...

I have a linear relationship . How do I express N as a function of t, i.e. as ?
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pi

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Re: Expressing a linear relationship as a function
« Reply #1 on: April 03, 2013, 03:34:31 pm »
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Are you sure that question is correct? :O

(not missing any logs etc.)

domislong

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Re: Expressing a linear relationship as a function
« Reply #2 on: April 03, 2013, 03:37:04 pm »
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As far as I'm concerned it's already expressed as a function of t.

In the same way you could have f(x) = 10 + 5.5x, the convention is just y = f(x).

So for this case N = N(t), and it's a linear function.

pi

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Re: Expressing a linear relationship as a function
« Reply #3 on: April 03, 2013, 03:38:19 pm »
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^Yeah exactly, which is why I suspect the question hasn't been copied done in its entirety haha

alondouek

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Re: Expressing a linear relationship as a function
« Reply #4 on: April 03, 2013, 03:40:51 pm »
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Oh crap, missed the natural log  :-[

should be:
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b^3

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Re: Expressing a linear relationship as a function
« Reply #5 on: April 03, 2013, 03:42:36 pm »
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N is already a function of t, although I remember this example from somewhere being after a transformation? Which in that case we would have to use our log laws, if we have base^power=answer, then 'log base of the answer gives the power'.

Which means your would be and your would be .

EDIT: oh good, I remembers the example from the lecture right.... (not sure if that's a good or bad thing here...)
« Last Edit: April 03, 2013, 03:46:10 pm by b^3 »
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alondouek

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Re: Expressing a linear relationship as a function
« Reply #6 on: April 03, 2013, 03:47:40 pm »
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N is already a function of t, although I remember this example from somewhere being after a transformation? Which in that case we would have to use our log laws, if we have base^power=answer, then 'log base of the answer gives the power'.

Which means your would be and your would be .

EDIT: oh good, I remembers the example from the lecture right.... (not sure if that's a good or bad thing here...)

Thank you! Can't believe I've forgotten how to do this, my Methods teacher would kill me...
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