matrices transformation questions...

[bingbinglanglang]

umm i think my book is worng with the formulaes for matrices transformations....cud anyone give me the formulaes for dilations and reflections in the marix form pleaaaassseeeeeee

i get really stuck on these types of questions...

the transformation T:R^2  --->  R^2, which maps curve with he equation y=x^2 -4 to the curve wih the equation y=(x/2)^2 -1, could have the rule...?

[danieltennis]

Hey,
I give it my best shot. Ignore the commas in the matrices.

[bingbinglanglang]

yes!!! cud u pls give me the formulaes for the different transormations??? cus i think mine are wrong and i dont know how to check them?

[danieltennis]

yes!!! cud u pls give me the formulaes for the different transormations??? cus i think mine are wrong and i dont know how to check them?

Is that right though?

[bingbinglanglang]

yah that was the answer! my formuka says to put dilations of 2 at he bottom right...

i think my formulas arnt correct!!! helllpppp!!!

[bingbinglanglang]

someone heelllppppppppppp don't know if these formulaes are rightttt!! ahhhhhh!!

[methodsboy]

which text book did u find those formula in?

[bingbinglanglang]

essentials