This questions is from the non calculator SQA examination 2005. I'm struggling a bit on 10b) and wondered if anybody could help me out. I know I do have a tiny little red gem in the top right hand corner there but don't let that put you off I'm sitting on -1 after I started a controversial thread
This is the question:
The answer to a) is
And this is what I attempted to do for b):
It seems very complicated though
EDIT: The title is meant to say graph not graphy, was a bit rushed. But you must admit graphy does sound a bit cooler
EDIT2: How can you neg me for this? Just wanting some help
(Original post by notnek)
I'm not sure why the maximum of your graph has become 5. Did you draw correctly? The graph of is between -1 and 1 with the first maximum (starting from 0 and going right) at .
The first transformation moves the maximum units to the right so it becomes .
The second transformation stretches the graph along the y-axis by a factor of 2 (i.e. y is multiplied by 2) so the maximum becomes .
The solutions said it was 5 so I tried to work my way back from the solutions to create a method. I'm finding the solutions very confusing. I have attached it for you.