Post by: spudman on November 06, 2008, 06:08:11 pm
I am unable to come to grips with how dilation rules work.
How do u apply say a dilation parrallel to the x-axis by factor 3 vs dilation parralel to y-axis by factor 3 say to y=x^2 and y=1/x^2
Thanks alot :D
Post by: Mao on November 06, 2008, 06:13:15 pm
parallel to y by a factor of 3:
Post by: methodsboy on November 06, 2008, 06:15:23 pm
the graph of y=x^2 is goes through the following transformation:
Dilation factor of 3 in x -axis: ---> y= 3x^2
Dilation factor of 1/3 in y -axis: ---> y= (3x)^2 to become 9x^2
sorry guys...i fixed it just now :)
Post by: Lulu on November 06, 2008, 06:19:31 pm
ok ill do an example.
the graph of y=x^2 is goes through the following transformation:
Dilation factor of 3 in x -axis: ---> y= 3x^2
Dilation factor of 1/3 in y -axis: ---> y= (3x)^2 to become 6x^2
err is this correct? i'm sort of confused now lol
Post by: spudman on November 06, 2008, 06:29:12 pm
Post by: Mao on November 06, 2008, 06:33:25 pm
Post by: kurrymuncher on November 06, 2008, 06:35:50 pm
Shifted +4 units along the X axis
or like
Shifted 4 units in the positive direction of the X axis.
Is there a big difference. Thanks :)
Post by: dekoyl on November 06, 2008, 06:38:57 pm
Post by: Lulu on November 06, 2008, 07:24:43 pm
State the transformations applied from g(x) to f(x):
(http://img503.imageshack.us/img503/8877/questionsbx3.png)
For both I had a reflection in the y-axis, but the answer says there is no reflection :o
Post by: Mao on November 06, 2008, 07:58:13 pm
both are evenly symmetrical functions, hence reflecting in this sense doesn't really do anything.
Post by: Lulu on November 06, 2008, 07:59:12 pm
thanks again mao
Post by: trinon on November 06, 2008, 08:14:52 pm
Epic reply.