transformations

[wombifat]

So we've been doing stuff on transformations, and I've been just looking at the equation to work it out, like it says in Maths Quest, but the teacher is using the method where you like rearrange the equation and all that jazz, like it tells you to in essential.

Is there any disadvantage to the way I've been doing it? I still get the right answer

[pHysiX]

no way mate. that's wat i did for methods. like just look @ the equation n u'll just know wat transformations to apply.

on the eoy exam, u won't have to show working out for how u get the transformation to answer the question, and it's definitely much faster to use that method, not the mapping notation.

hope it helps =]

[kurrymuncher]

mapping notation is not the way to go, just remember stuff like:

f(ax)- dilation by 1/a  away from y axis etc etc

[IntoTheNewWorld]

Slightly hijacking thread, but is this also true of the alternative to doing Absolute Value functions? Mathsquest just teaches you how to graph it by applying transformations, but some people teach graphing it by splitting it into hybrid functions. Is the hybrid function method necessary in ANY situation? It seems a bit of a pain.

[kurrymuncher]

No. the hybrid function thing isnt necessary. Its best to graph the original absolute value function and then apply each transformation in the correct order.

[Mao]

No. the hybrid function thing isnt necessary. Its best to graph the original absolute value function and then apply each transformation in the correct order.

what if you are asked to graph

the chances of that question popping up on the exam is low, but it is still advisable to learn the hybrid form of the modulus function.