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이차함수 그래프의 대칭성 확장

Posted at 2011-12-06 10:44:56

NCTN의 Mathematics teacher에서 본 내용을 가공하여 
소개합니다.
<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' src="/shop/lib/meditor/../../data/editor/1323135513.jpg">&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' border=0 hspace=0 alt="" align=baseline 
src="http://www.mathlove.co.kr/board1/MBImages/i090417724_para01.JPG" width=142 
height=127>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' border=0 hspace=0 alt="" 
align=baseline 
src="http://www.mathlove.co.kr/board1/MBImages/i090417478_para02.JPG" width=145 
height=132>
&nbsp;
<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' src="/shop/lib/meditor/../../data/editor/1323135674.jpg">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' style="WIDTH: 204px; HEIGHT: 206px" border=0 
hspace=0 alt="" align=baseline 
src="http://www.mathlove.co.kr/board1/MBImages/i090417827_para03.JPG" width=229 
height=223>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' style="WIDTH: 161px; HEIGHT: 183px" border=0 hspace=0 alt="" align=baseline 
src="http://www.mathlove.co.kr/board1/MBImages/i090417961_para04.JPG" width=197 
height=211>
예를 들면 똑바로 쏘아올린 공이 올라갈때 t=3 (초)에서와 내려올 때 t=5 (초)에서 같은 높이라면 

땅에 떨어지는 시간은 3+5=8 (초)이다. 
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<img onLoad='miniSelfResize(contents_24,this); if(this.parentNode.tagName=="A"){this.onclick = "";}' style="WIDTH: 177px; HEIGHT: 214px" border=0 hspace=0 alt="" align=baseline 
src="http://www.mathlove.co.kr/board1/MBImages/i090417827_para05.JPG" width=202 
height=239>

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