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August 5th, 2012, 03:03 PM   #1
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Find a set of parametric equations for the rectangular equat

problem #1

y = 3x + 3




problem #2

y = x^4 + 4
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August 5th, 2012, 03:16 PM   #2
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Re: Find a set of parametric equations for the rectangular e

For both problems try letting .
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August 5th, 2012, 08:02 PM   #3
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Re: Find a set of parametric equations for the rectangular e

how do I let x = t ?
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August 5th, 2012, 08:09 PM   #4
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Re: Find a set of parametric equations for the rectangular e

You just tell x to relax...this is going to happen...and it will submit.

Seriously, you want to define x to be a function of t, and this is the simplest I can think of that will work for our purpose here. There are infinitely many ways we could define a set of parametric equations though.

For example, for the first problem, we could let:

then



You see, if we write:

then let =t-1" /> and substituting for into the rectangular equation, we then have:

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August 5th, 2012, 08:48 PM   #5
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Re: Find a set of parametric equations for the rectangular e

Mark

so can I let x = t-1
and y then = 3t

is this just an example of how you could do this or is this one sufficient answer?


thanks
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August 5th, 2012, 09:00 PM   #6
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Re: Find a set of parametric equations for the rectangular e

It's just one way...another would be as I suggest first:

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