極值點(diǎn)是什么意思函數(shù)的極大值與極小值統(tǒng)稱(chēng)為函數(shù)的極值，使函數(shù)取得極值的點(diǎn)稱(chēng)為極值點(diǎn)?？蓪?dǎo)函數(shù)f(x)的極值點(diǎn)必定是它的駐點(diǎn)。但是反過(guò)來(lái)，函數(shù)的駐點(diǎn)卻不一定是極值點(diǎn)。極值點(diǎn)處f(x)的導(dǎo)數(shù)為零或不存在，且函數(shù)的單調(diào)性必然變化。{0}2，極大值點(diǎn)是點(diǎn)嗎若f(a)是函數(shù)f(x)的極值，則稱(chēng)a為函數(shù)f(x)取得極值時(shí)x軸對(duì)應(yīng)的極值點(diǎn)，a就是一個(gè)點(diǎn)。解：由：fx(x,y)=3x2-8x+2y=0；fy(x,y)=2x-2y=0得：x=y=0；x=y=2fxx(x,y)=6x-8；fxy(x,y)=2；fyy(x...