- #1

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## Homework Statement

Give a parameterization for the portion of the graph of xy = 1 for 1 < x < 3

i have no idea what it is asking

x=y

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- Thread starter intenzxboi
- Start date

- #1

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Give a parameterization for the portion of the graph of xy = 1 for 1 < x < 3

i have no idea what it is asking

x=y

- #2

- 81

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- #3

- 98

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so x+t, 1/y+t?

- #4

- 81

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I think you should try looking for something along the lines of:

x = ...

y = ...

x = ...

y = ...

- #5

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x=t

y=1/t

so (t, 1/t) 1<t<3

what do i do with this? prof didn't really go over an example like this

y=1/t

so (t, 1/t) 1<t<3

what do i do with this? prof didn't really go over an example like this

- #6

- 1,631

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do you have any info for z?

- #7

Dick

Science Advisor

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Set x=t, ok? So your first equation is x=t. What's y in terms of t?

- #8

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x=t

y=1/t

so (t, 1/t) 1<t<3

what do i do with this? prof didn't really go over an example like this

this looks good. Is this in R^2 or R^3?

- #9

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i did now what?

- #10

Dick

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do you have any info for z?

z? Why z?

- #11

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what do you mean r^2 or r^3?

- #12

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z? Why z?

No particular reason...its just that for some reason i thought we were working in R^3. But, this is not the case since,apparently, we are working in R^2.

- #13

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what do you mean r^2 or r^3?

I didn't write anywhere neither r^2 nor r^3.

- #14

Dick

Science Advisor

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No particular reason...its just that if we are working in R^3. But, this is not the case since,apparently, we are working in R^2.

Seems so. Carry on.

- #15

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so is that it?

my answer is

x=t

y=1/t

so (t, 1/t) 1<t<3

my answer is

x=t

y=1/t

so (t, 1/t) 1<t<3

- #16

- 1,631

- 4

so is that it?

my answer is

x=t

y=1/t

so (t, 1/t) 1<t<3

yep!

- #17

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thanks a lot guys!!

- #18

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x = t? Really? You guys are boring. :rofl:

- #19

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x = t? Really? You guys are boring. :rofl:

you could have also chosen y=t. or x=u, if you don't like "t's" in particular.

- #20

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- #21

Mark44

Mentor

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Sure, you could write it as x = (sin

- #22

Dick

Science Advisor

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Plus picking x=t makes it straightforward to find the t limits corresponding to 1<x<3.

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