CE MATHS [復制鏈接]

let F( x ) be a polynomial. If F (x ) is disvisble by x-1 , WHich IS THE FACTOR OF F(2X+1)

A.X
B.X-3
C.2X-1
D.2X+1

C

引用第1樓chun1424於2010-03-31 21:46發表的“”:
C [表情]

C錯

a..

引用第2樓朗仔於2010-03-31 21:47發表的“”:
C錯 [表情] [表情]

哈.... 唔係用英文讀maths, 唔岩添, sorry
加上maths 真係好差

引用第3樓rBB於2010-03-31 21:48發表的“”:
a..

可唔可以講講

引用第4樓chun1424於2010-03-31 21:49發表的“”:
哈.... 唔係用英文讀maths, 唔岩添, sorry [表情]
加上maths 真係好差 [表情] [表情] [表情]

冇所謂,討論下

let F( x ) be a polynomial. If F (x ) is disvisble by x-1 , WHich IS THE FACTOR OF F(2X+1)

A.X
B.X-3
C.2X-1
D.2X+1

f(x) divisible by x-1
=>f(1)=0

when finding the factor of f(2x+1), f(2x+1) should be = 0
known that f(1)=0
so 2x+1 = 1
=> x=o
=> x is a factor

咁得意,好似好少咁問

引用第8樓OldSosad於2010-03-31 21:56發表的“”:
咁得意,好似好少咁問

但我唔識.

引用第7樓rBB於2010-03-31 21:54發表的“”:
let F( x ) be a polynomial. If F (x ) is disvisble by x-1 , WHich IS THE FACTOR OF F(2X+1)
A.X
B.X-3
C.2X-1
.......

nice.thx

IF Y=LOG X , THEN 100^y= ?

ans:x^2

樓主果條我做過@@ 07年CE@@

引用第11樓朗仔於2010-03-31 22:47發表的“”:
IF Y=LOG X , THEN 100^y= ?
ans:x^2
[表情] [表情]

?

Y=Log x        

then 10^y=x

-----
since 100^y = (10^y ) (10^y)
              =(x)(x)
              =x^2

引用第13樓反傳統於2010-04-01 00:45發表的“”:
?
Y=Log x        
.......

可以咁架咩? 我唔記得哂