It would be appreciated if someone help me out with sketching these 2 functions
f(x)= e-x+4 -2 ********* f(x)>=1
2) f(x)= ln(4-2x) x<2
As for 2nd one I can sketch ln(-2x) but not ln (4-2x) !!!
To me its just ln(-2x) shifted by 4 units to the left on x direction but I am wrong according to the mark scheme!
Last edited by arvin_infinity; 02-06-2012 at 15:42.
I don't think the method is new to you but maybe you're out of practice or I went too fast. Here's a few more examples:
(Original post by arvin_infinity)
Well above confirms that my method was totally wrong
but didn't really follow what you are doing...
why would you find h(x-2)?
am I reading it backwards ? as in you factorise the 2 and then you thought that's equal to h(x-2)?
Your method is totally new to me!
What is the transformation to get from f(x) -> g(x)?
A common mistake is to assume that the transformation will be by 2 units but this will not work e.g.
It makes things clearer if you factorise:
Now you should be able to see that so the transformation will be a translation 1 unit to the left.
Another example (similar to your question):
So f(x) -> g(x) is a translation 2 units to the right.
Last edited by notnek; 29-05-2012 at 03:25.