Question

函數(shù)y=x³-6x+a的極大值為         ,極小值為         .

Answer 1

解析：y′=3x²-6=0,得x=±.

當(dāng)x＜-或x＞時(shí),y′＞0;

當(dāng)-＜x＜時(shí),y′＜0.

∴函數(shù)在x=-時(shí)取得極大值a+,在x=時(shí)取得極小值a-.?

答案：a+　a-