e.g.
y=x^3-3x
如果要畫 咁要點畫
係咪要畫個表出黎 逐點plot
更新1:
另外我想問 會考會要你畫d咩類型既graph 通常最盡都係去到quadratic?
會考 maths 同 a maths
回答 (3)
2007-04-01 12:06 am
✔ 最佳答案
Maths 不會出, 因為在 Syllabus 範圍之外.A. Maths 有99%唔會出, 出的話, 就要考考一些想攞 A 的人.
點畫, 首先就要 D 一 D 佢, 找到兩個 local maximum 同 minimum, 分別係 x = -1 or 1. 畫上呢兩點 (緊係要搵埋 y啦), 然後, x 同 y-intersects, 就夠點了, 聯起佢就完成.
2007-04-01 5:00 am
In CE Math, you are only required to regonise the following graphs
(i) linear and quadratic graphs
(ii) trigonometric graphs (sin, cos, tan)
(iii) exponential and logarithemic graphs
(iv) circles
other types of graph will be provided if necessary.
In recent years, Additional mathematics seems not going to test your ability of sketching graphs with given equations.
Instead, they will only provide the signs of dy/dx, (or d2y/dx2, second derivatives)
in different intervals, you need to use derivative tests to determine extreme points and hence sketch the graph.
[You may refer to some past paper questions such as 04 Q17, 06 Q13 and Q16]
(i) linear and quadratic graphs
(ii) trigonometric graphs (sin, cos, tan)
(iii) exponential and logarithemic graphs
(iv) circles
other types of graph will be provided if necessary.
In recent years, Additional mathematics seems not going to test your ability of sketching graphs with given equations.
Instead, they will only provide the signs of dy/dx, (or d2y/dx2, second derivatives)
in different intervals, you need to use derivative tests to determine extreme points and hence sketch the graph.
[You may refer to some past paper questions such as 04 Q17, 06 Q13 and Q16]
2007-04-01 12:30 am
咁就要睇下你對題目ge麻煩點睇法啦
你舉ge例子,因為係涉及三次方程,可能需要微積分,就不大機會要你畫
但係亦可以要你畫一d課程內容ge野
例如,y = x^2 - x
y = a^x
y = log[a] x
y = ax + b
(x - h)^2 + (y - K)^2 = r^2
你舉ge例子,因為係涉及三次方程,可能需要微積分,就不大機會要你畫
但係亦可以要你畫一d課程內容ge野
例如,y = x^2 - x
y = a^x
y = log[a] x
y = ax + b
(x - h)^2 + (y - K)^2 = r^2
參考: eason mensa
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