初中知識(shí)回顧

1、初中知識(shí)回顧與檢測(cè)初中知識(shí)回顧與檢測(cè)一常用知識(shí)一常用知識(shí)班級(jí)_________姓名_________學(xué)號(hào)________完全平方公式：____________________??2)(ba____________________??2)(ba平方差公式：_____________________??22ba立方差公式：_______________________??33ba立方和公式：_______________________??

2、33ba根式化簡(jiǎn)：=___________=___________.2a33a在中，ABCRt?sinB=______cosB=______tanB=____________(邊的關(guān)系)?2c二特殊角的三角函數(shù)值二特殊角的三角函數(shù)值:sin300=______cos300=______tan300=______sin450=______cos450=______tan450=______sin600=______cos600=_____

3、_tan600=______三常用函數(shù)常用函數(shù)（1）一次函數(shù)一次函數(shù):形如形如____________為一次函數(shù)，圖象是一條______當(dāng)k0時(shí)y隨x的________而________(直線(xiàn)從左向右上升)當(dāng)k0時(shí)雙曲線(xiàn)在___________象限(從左向右降)當(dāng)k0時(shí)開(kāi)口___________a0時(shí)開(kāi)口_________.②頂點(diǎn)坐標(biāo)是______________對(duì)稱(chēng)軸是直線(xiàn)___________.特別:拋物線(xiàn)y=a(x－h(huán))2k的頂點(diǎn)