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Penggal 1 - Mathematics (T) 讨论区
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Chapter 1: Functions
- Functions
-Polynomials and Rational Functions
-Exponential and Logarithmic Functions
-Trigonometric Functions
Chapter 2: Sequences and Series
-Sequences
-Series
-Binomial Expansions
Chapter 3: Matrices
-Matrices
-Systems of Linear Equations
Chapter 4: Complex Numbers
-Conjugate, Modulus, Arguments and Argand Diagram
-Roots of Equations
-Complex Numbers in Cartesian Form
-Complex Numbers in Polar Form
Chapter 5: Analytical Geometry
-Conics
-Parametric Equations
Chapter 6: Vectors
-Vectors in Two and Three Dimensions
-Vectors Geometry
本帖最后由 ~HeBe~_@ 于 24-11-2013 06:46 AM 编辑
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发表于 24-2-2014 07:34 PM
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Who nid STPM pass year question (1999-2011) , powerpoint and notes according to terms ( new modular system ) for Math T , Chem n Phys ? pls contact me on my fb account https://www.facebook.com/bleach.byakuya.3 or sms to my handphone no. 0148711988 . TQ . |
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发表于 24-2-2014 07:35 PM
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Who nid STPM pass year question (1999-2011) , powerpoint and notes according to terms ( new modular system ) for Math T , Chem n Phys ? pls contact me on my fb account https://www.facebook.com/bleach.byakuya.3 or sms to my handphone no. 0148711988 . TQ . |
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发表于 16-5-2014 11:01 PM
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chapter 5
(-1/2)+ = -0.49
+more than or almost equal,就是说大过-0.5的数目? |
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发表于 17-5-2014 10:37 AM
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doeramon 发表于 16-5-2014 11:01 PM
chapter 5
(-1/2)+ = -0.49
+more than or almost equal,就是说大过-0.5的数目?
应该小过涅。。-0.5 < -0.49
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发表于 17-5-2014 10:41 AM
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doeramon 发表于 16-5-2014 11:01 PM
chapter 5
(-1/2)+ = -0.49
+more than or almost equal,就是说大过-0.5的数目?
不明白你在问什么
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发表于 17-5-2014 11:05 AM
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yy^^yy 发表于 17-5-2014 10:37 AM
应该小过涅。。-0.5 < -0.49
我大概明白了
我的问题是这样的
(-1/2)+
有什么号码是almost more than-0.5?答案就是-0.49,-0.48,..
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发表于 17-5-2014 11:20 AM
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发表于 17-5-2014 11:57 AM
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本人来向大家请教请教!请各位帮帮我问题是这样的:sketch the graph of each of the following functions.Hence,determine its domain and range.
就是C那题orzlll
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发表于 17-5-2014 12:11 PM
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polygon0121 发表于 17-5-2014 11:57 AM
本人来向大家请教请教!请各位帮帮我问题是这样的:sketch the graph of each of the following fu ... h(x)=x(x+1)(x+3)
Let h(x)=0, x(x+1)(x+3)=0
roots: x=-3,-1,0
然后domain和range看图后会找吧
本帖最后由 Allmaths 于 17-5-2014 12:13 PM 编辑
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发表于 17-5-2014 12:15 PM
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Allmaths 发表于 17-5-2014 12:11 PM
h(x)=x(x+1)(x+3)
Let h(x)=0, x(x+1)(x+3)=0
神啊!!!感谢回复,顺便问问,(D)也是用同样的方法吗???可以也顺便回答回答我吗?很麻烦的话请无视我好了orzlll
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发表于 17-5-2014 12:18 PM
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polygon0121 发表于 17-5-2014 12:15 PM
神啊!!!感谢回复,顺便问问,(D)也是用同样的方法吗???可以也顺便回答回答我吗?很麻烦的话请无视我 ...
(d)也是cubic function,就用一样的方法找咯
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发表于 17-5-2014 12:20 PM
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Allmaths 发表于 17-5-2014 12:18 PM
(d)也是cubic function,就用一样的方法找咯
内个~关于那边roots:-3,-1,0 <------这里!我不明白怎么回事,可以解释解释吗?
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发表于 17-5-2014 12:27 PM
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polygon0121 发表于 17-5-2014 12:20 PM
内个~关于那边roots:-3,-1,0
首先你要明白root是什么意思(这里definition不多说,课本应该有。。再不会google下就有)
简单来说就是curve intersect with x-axis的point
h(x)=x(x+1)(x+3)
当x=0, h(0)=0
x=-1, h(-1)=0
x=-3, h(-3)=0
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发表于 17-5-2014 12:30 PM
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Allmaths 发表于 17-5-2014 12:27 PM
首先你要明白root是什么意思(这里definition不多说,课本应该有。。再不会google下就有)
简单来说就 ...
花了点时间明白了!有问题会再问!非常感谢指导
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发表于 17-5-2014 12:43 PM
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polygon0121 发表于 17-5-2014 12:30 PM
花了点时间明白了!有问题会再问!非常感谢指导
不客气!
好!让这论坛的数学讨论区复活,就靠你了!
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发表于 17-5-2014 02:11 PM
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求解,
the domain of a function h, where h:x→2^x, is R
问题是find the range of the function h
答案说range是R+,意思是不是说这个function的range都是大过零的real number?? |
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发表于 17-5-2014 02:15 PM
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本人又来问问题了 是这样的:sketch the graph of y=f(x)=x^3 and use thie graph to sketch the graph of.......
就是6(a)那题。。。
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发表于 17-5-2014 02:20 PM
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Choon96 发表于 17-5-2014 02:11 PM
求解,
the domain of a function h, where h:x→2^x, is R
问题是find the range of the function h
对,+是positive,也就是大过0
h(x)=2^x
这是exponential function, 所以h(x) is strictly positive for all x. i.e h(x)>0 x∈ℝ
本帖最后由 Allmaths 于 17-5-2014 02:22 PM 编辑
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发表于 17-5-2014 02:21 PM
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还有一题是let X = {1,2,3,4}. show whether each of the following relations, which define the set of ordered pairs, represent a function from X to X.
b) g: {(3,1),(4,2),(1,1)}
据我所知,function必须是onetoone,manytoone,以及全部domain都被连接才算是function。那为什么答案说b那题是function呢? |
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