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Author Topic: Maths help  (Read 2371 times)

Offline wassup

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Maths help
« on: October 10, 2009, 10:18:25 am »
Can anybody provide some notes on shear and stretch?

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Offline astarmathsandphysics

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Re: Maths help
« Reply #1 on: October 10, 2009, 12:20:51 pm »
I can make some notes. Is it for a level?
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Offline sweetsh

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Re: Maths help
« Reply #2 on: October 10, 2009, 12:32:35 pm »
No IGCSE
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Offline astarmathsandphysics

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Re: Maths help
« Reply #3 on: October 10, 2009, 12:41:58 pm »
Ok. Will do.
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Offline SGVaibhav

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Re: Maths help
« Reply #4 on: October 10, 2009, 02:58:50 pm »
There were loads of these notes made in may/june, we can just copy paste here :D
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Offline astarmathsandphysics

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Re: Maths help
« Reply #5 on: October 10, 2009, 11:48:07 pm »
I wrote these note. They are under a level physics. Tell me if you want some more.

http://www.astarmathsandphysics.com/a_level_physics_notes/a_level_physics_notes_shear_deformation.html
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Offline wassup

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Re: Maths help
« Reply #6 on: October 11, 2009, 05:04:30 pm »
thank u very much for the help but these notes are not what i need. in shear and stretch, there is an invariant and how to take out the scale factor, etc. so plz help me asap as i hav my exam in this oct/nov 09 session.
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Offline sh@ni_rox

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Re: Maths help
« Reply #7 on: October 12, 2009, 09:04:22 am »
hey  :)
i dont really have any notes i can give you but i can try and explain it to you...
In a Stretch: the points move at right angles to the invariant line
                  there are 2 basic transformation matrix for the stretch
                  1.) when the x-axis is the invariant line - [0 K] where k is the scale factor
                                                                            [1 0]
                   
                   2.) when the y-axis is the invariant line [0 1] where K is again the scale factor
                                                                           [K 0]

In a Shear: the points move parallel to the invariant line
                there are also 2 basic transformation matrix for the shear
                1.) when the x-axis is the invariant line - [1 K]
                                                                          [0 1]

                 2.) when the y-axis is the invariant line - [1 0]
                                                                           [K 1]

                                                                         
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Offline sh@ni_rox

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Re: Maths help
« Reply #8 on: October 12, 2009, 09:08:12 am »
oh by the way,
*NB: the invariant line is the line about which the transformation takes place such that points on the line remain FIXED or (do not move)

the difference between a shear and a strtch is quite easy to see, as a shear will really distort the original image, a stretch will just err... stretch it? lol
anyways hope that helped!  ;D
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Offline astarmathsandphysics

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Re: Maths help
« Reply #9 on: October 12, 2009, 11:40:34 am »
I have done a pnother page of notes on this and will put them up tonight
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Offline wassup

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Re: Maths help
« Reply #10 on: October 12, 2009, 01:16:24 pm »
Thanks shani, i got a lil bit of it but m w8ing fr ur notes astar.
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Offline astarmathsandphysics

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Re: Maths help
« Reply #11 on: October 12, 2009, 02:47:03 pm »
I will do maybe 6 pages of notes today, and will keep doing igcse maths and additional maths notes for a week or two.
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Offline wassup

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Re: Maths help
« Reply #12 on: October 12, 2009, 06:35:40 pm »
plz try 2 complete d notes asap. i hav my exam on 28th october.
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Offline astarmathsandphysics

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Re: Maths help
« Reply #13 on: October 12, 2009, 06:45:36 pm »
I hope to have them up within a week. Please make a list of the topics you want or I will write them as they occur to me.
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Offline @d!_†oX!©

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Re: Maths help
« Reply #14 on: October 12, 2009, 06:49:35 pm »
Quote from: sgvaibhav on October 10, 2009, 02:58:50 pm
There were loads of these notes made in may/june, we can just copy paste here :D
which ones are u talking about vaibhav...... ???
and astar...can u please try and make notes on "components of a vector"....bt remember for igcse...plsss.....it'll be a gr8 help... :) :)
and hi mihir....welcome to d forum!!!! ;D
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AAL IZZ WELL!!! ;)
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