试题 试卷
题型:解答题 题类:常考题 难易度:普通
正弦函数的单调性++++++++++++
(I)记 ,讨论函F(x)单调性;
(II)令G(x)=af(x)+g(x)(a∈R),若函数G(x)有两个零点.
(i)求参数a的取值范围;
(ii)设x1 , x2是G(x)的两个零点,证明x1+x2+2<0.
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