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September 25, 2025, 01:36:34 am
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dejan91

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Question
« on: November 03, 2009, 11:43:17 pm »
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Just a query: If , in what domain would you find the solutions in if the equation is ? Would it be ?
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dejan91

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Re: Question
« Reply #1 on: November 03, 2009, 11:45:05 pm »
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Or just ?
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naved_s9994

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Re: Question
« Reply #2 on: November 04, 2009, 07:56:05 am »
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I think, dejan has done what i'd do aswell
You simply expand the domain (or adjust)
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vamsiaus

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Re: Question
« Reply #3 on: November 04, 2009, 09:22:01 am »
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You adjust the dilation factor parallel to the x-axis. Thus in this situation the expanded domain would be [0,2pi] and you find all solutions within this domain and solve for x.
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dejan91

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Re: Question
« Reply #4 on: November 04, 2009, 03:02:23 pm »
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Quote from: vamsiaus on November 04, 2009, 09:22:01 am
You adjust the dilation factor parallel to the x-axis. Thus in this situation the expanded domain would be [0,2pi] and you find all solutions within this domain and solve for x.

Well, that's what I was thinking, and you'd think that, using this method, there are two solutions for that equation. One in the first quadrant and one in the fourth. But there are three... another at . Are the answers wrong maybe?
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vamsiaus

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Re: Question
« Reply #5 on: November 04, 2009, 03:13:55 pm »
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Quote from: dejan91 on November 04, 2009, 03:02:23 pm
Quote from: vamsiaus on November 04, 2009, 09:22:01 am
You adjust the dilation factor parallel to the x-axis. Thus in this situation the expanded domain would be [0,2pi] and you find all solutions within this domain and solve for x.

Well, that's what I was thinking, and you'd think that, using this method, there are two solutions for that equation. One in the first quadrant and one in the fourth. But there are three... another at . Are the answers wrong maybe?

Hmm... well I just drew the graph on the calculator and there seems to be only 2 solutions in that domain. So I'd think maybe solutions are incorrect.

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dejan91

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Re: Question
« Reply #6 on: November 04, 2009, 04:03:07 pm »
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, , and is what I got :S Lol third person to confirm which solution's correct?
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TrueTears

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Re: Question
« Reply #7 on: November 04, 2009, 04:34:27 pm »
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I get and
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