问题
解答题
函数f(x)=x3-15x2-33x+6的单调减区间为______.
答案
对函数f(x)=x3-15x2-33x+6求导,得f′(x)=3x2-30x-33,
令f′(x)<0,即3x2-30x-33<0,解得,-1<<11
∴函数f(x)=x3-15x2-33x+6的单调减区间为(-1,11)
故答案为(-1,11)
函数f(x)=x3-15x2-33x+6的单调减区间为______.
对函数f(x)=x3-15x2-33x+6求导,得f′(x)=3x2-30x-33,
令f′(x)<0,即3x2-30x-33<0,解得,-1<<11
∴函数f(x)=x3-15x2-33x+6的单调减区间为(-1,11)
故答案为(-1,11)
完形填空 | |||
Han Mei is a nice girl. She 1 from Yunnan. 2 this picture of her family. There are 3 people in her family. 4 can see her father, her mother and her brother. Han Mei is behind (在后面) her mother, 5 we can see her. Han Mei has a 6 . It's a nice cat. Its 7 i ![]() Han Mei's arms. Han Mei has a 10 25 family. She loves her family very much . | |||
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