ATAR Notes: Forum
VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: Teen on September 30, 2012, 06:50:56 pm
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let say , Y=X3
after the transformation ,I got y=-x3
according to the answer , reflection could of occurred at the x axis or y axis.
which answer, should i pick?
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Whichever answer you find to be more aesthetically pleasing?
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Both is correct.
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Whichever answer you find to be more aesthetically pleasing?
what do u mean?
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I just meant pick whatever answer you like, it doesn't matter LOL
Personally I'd pick reflection in the x-axis because i like the symmetry of the letter x in comparison to the letter y.
(don't judge me, I know you'd have a preference of the two as well :( )
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yeah, both is right, since it's an odd function ←I think it's how you call it
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^That's correct, an odd function is any function f(x) such that f(-x) = -f(x). Hence a reflection in the y-axis does the same thing as a reflection in the x-axis.
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Yep, exactly right, thing with transformations, don't get carried away with the wording, if you are unambiguous and you correctly describe what is going on, then you will get your marks.
With reflections and dilations, there are often more than one way of describing them.
Example: y = 9x^2
This can either be a dilation by a factor of 9 away from the x-axis or a dilation by a factor if 1/3 away from the y-axis or a dilation by a factor of 9 parallel to the y-axis or a dilation by a factor of 1/3 parallel to the x-axis.
4 ways to say the same thing.
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Yep, exactly right, thing with transformations, don't get carried away with the wording, if you are unambiguous and you correctly describe what is going on, then you will get your marks.
With reflections and dilations, there are often more than one way of describing them.
Example: y = 9x^2
This can either be a dilation by a factor of 9 away from the x-axis or a dilation by a factor if 1/3 away from the y-axis or a dilation by a factor of 9 parallel to the y-axis or a dilation by a factor of 1/3 parallel to the x-axis.
4 ways to say the same thing.
And this is why I hate methods :(
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Why would it be a reason for you to hate methods? There's never really one way of doing anything in any subject.
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Why would it be a reason for you to hate methods? There's never really one way of doing anything in any subject.
I agree, when I hate on physics I make sure I hate on every aspect of the subject :)
It's just a matter of being consistent :)
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I agree, when I hate on physics I make sure I hate on every aspect of the subject :)
It's just a matter of being consistent :)
This isn't what your sig says!
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I agree, when I hate on physics I make sure I hate on every aspect of the subject :)
It's just a matter of being consistent :)
This isn't what your sig says!
I was hoping people would notice the sarcasm in it... :P
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Whichever answer you find to be more aesthetically pleasing?
HAHAHA