題目列表(包括答案和解析)
已知函 數(shù).
(1)若曲線在點(diǎn)處的切線與直線垂直,求函數(shù)的單調(diào)區(qū)間;
(2)若對(duì)于都有成立,試求的取值范圍;
(3)記.當(dāng)時(shí),函數(shù)在區(qū)間上有兩個(gè)零點(diǎn),求實(shí)數(shù)的取值范圍.
(本小題滿分12分) 已知函數(shù).
(Ⅰ)若曲線在點(diǎn)處的切線與直線垂直,求函數(shù)的單調(diào)區(qū)間;
(Ⅱ)若對(duì)于都有成立,試求的取值范圍;
(Ⅲ)記.當(dāng)時(shí),函數(shù)在區(qū)間上有兩個(gè)零點(diǎn),求實(shí)數(shù)的取值范圍.
(本小題滿分12分)已知函數(shù).
(1)若曲線在點(diǎn)處的切線與直線垂直,求函數(shù)的單調(diào)區(qū)間;
(2)記.當(dāng)時(shí),函數(shù)在區(qū)間上有兩個(gè)零點(diǎn),求實(shí)數(shù)的取值范圍.
已知函數(shù),.
(1)若曲線在點(diǎn)處的切線與直線垂直,求的值;
(2)求函數(shù)的單調(diào)區(qū)間;(3)當(dāng),且時(shí),證明:.
(本小題滿分14分)已知函數(shù)
(1)若曲線在點(diǎn)處的切線與直線垂直,求函數(shù)的單調(diào)區(qū)間;
(2)若對(duì)都有成立,試求實(shí)數(shù)a的取值范圍;
(3)記,當(dāng)a=1時(shí),函數(shù)在區(qū)間上有兩個(gè)零點(diǎn),求實(shí)數(shù)b的取值范圍。
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