中三~中四數學, 高手請入!

I've done all the above questions, as I'm also learning Kumon
Maybe I can solve K3 for you first:
The axis of symmetry is x=a
a=2
(i)When a< 0
(ii)When a <= 0 < 2
the minimum is f(1)
I can't explain it on here, but if you like, you can add me MSN:[email protected]
P.S.I'm only form 1 >_<

2010-04-19 21:53:29 補充：
I'm now learning K170

K1
'.'1. cal the value of a by putting both same value of different x so that we can set up equations
egK1
'.' 0<=x<=4
.'. you can choose 0 and 4 to put into the f(x)
then f()=f()
then a is calculated
when you calculated the a, that is the min/max value of x of the parabola

任事系一步一步來,你而家睇好難,但你一步一步讀上去,你可能睇書就識唔洗老師教都唔定

而家你應該有學在坐標圖上畫直線方程,但如果個方程有2次方,就會畫出曲線圖,好似上面D圖咁,2次方程的曲線圖又稱拋物線,拋物線一定有對稱軸同最大值或最小值,D格仔就系填對稱軸

其實你唔洗咁快學住,如果你想學多D野,我建議可以學左中3的野先,呢D系中4的野

我保證呢個同你個syllabus係絕對唔同

中二做中四野,超左兩個學年都幾好...

不過呢d已經out晒c,只好等另外既高手幫你啦..

2010-04-18 09:35:38 補充：
06年CE都轉晒制,好多野都out左c啦

2010-04-18 19:21:51 補充：
re:
chung2425

佢公文式超左兩個學年,所以冇得佢唔做架