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November 02, 2025, 01:46:20 am

Author Topic: Spiral?/ Sketching vector eqn on classpad  (Read 1280 times)  Share 

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99.96

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Spiral?/ Sketching vector eqn on classpad
« on: October 07, 2011, 08:55:58 pm »
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Alright so i came across this question, you need to sketch this vector equation for t [0,2pi]
r(t) = 2e^(0.3t)cos(2t) i + 2e^(0.3t)sin(2t) j

I had no idea how to do it...turns out its a bloody spiral.
So my conclusion is that there must be a way to sketch this on the Casio Class Pad or the T inspire...

So does anyone know how to sketch it on the classpad? cheers.
« Last Edit: October 07, 2011, 09:03:27 pm by 99.96 »
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Re: Spiral?/ Sketching vector eqn on classpad
« Reply #1 on: October 07, 2011, 08:59:52 pm »
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If youre using the tinspire go to graphs, menu, graph type, parametric.
Then graph the i component as x1(t) and the j component as y1(t) :)

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Re: Spiral?/ Sketching vector eqn on classpad
« Reply #2 on: October 07, 2011, 09:02:40 pm »
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Seems easy enough, but im using the classpad...there better be a way to do it on there
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Re: Spiral?/ Sketching vector eqn on classpad
« Reply #3 on: October 07, 2011, 09:09:21 pm »
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Search through the menus and see if you can find a parametric function.

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Re: Spiral?/ Sketching vector eqn on classpad
« Reply #4 on: October 07, 2011, 09:18:14 pm »
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Got it :)
Casio did a nice job of hiding it
2010: Physics | Methods
2011: Specialist Maths [47]| Business Management [47]| Further Maths [50]| English [39]
ATAR: 99.30

Tutoring Specialist and Further Maths