題目列表(包括答案和解析)
已知實(shí)數(shù)a滿足0<a≤2,a≠1,設(shè)函數(shù)f (x)=x3-x2+ax.
(Ⅰ)當(dāng)a=2時(shí),求f (x)的極小值;
(Ⅱ)若函數(shù)g(x)=x3+bx2-(2b+4)x+ln x (b∈R)的極小值點(diǎn)與f (x)的極小值點(diǎn)相同.求證:g(x)的極大值小于等于.
已知實(shí)數(shù)a滿足0<a≤2,a≠1,設(shè)函數(shù)f (x)=x3-x2+ax.
(Ⅰ)當(dāng)a=2時(shí),求f (x)的極小值;
(Ⅱ)若函數(shù)g(x)=x3+bx2-(2b+4)x+ln x (b∈R)的極小值點(diǎn)與f (x)的極小值點(diǎn)相同.求證:g(x)的極大值小于等于.
已知實(shí)數(shù)a滿足1<a≤2,設(shè)函數(shù)f (x)=x3-x2+ax.
(Ⅰ) 當(dāng)a=2時(shí),求f (x)的極小值;
(Ⅱ) 若函數(shù)g(x)=4x3+3bx2-6(b+2)x (b∈R) 的極小值點(diǎn)與f (x)的極小值點(diǎn)相同,
求證:g(x)的極大值小于等于10.
已知實(shí)數(shù)a滿足1<a≤2,設(shè)函數(shù)f (x)=x3-x2+ax.
(Ⅰ) 當(dāng)a=2時(shí),求f (x)的極小值;
(Ⅱ) 若函數(shù)g(x)=4x3+3bx2-6(b+2)x (b∈R) 的極小值點(diǎn)與f (x)的極小值點(diǎn)相同,
求證:g(x)的極大值小于等于10.
已知實(shí)數(shù)a滿足1<a≤2,設(shè)函數(shù)f (x)=x3-x2+ax.
(Ⅰ) 當(dāng)a=2時(shí),求f (x)的極小值;
(Ⅱ) 若函數(shù)g(x)=4x3+3bx2-6(b+2)x (b∈R) 的極小值點(diǎn)與f (x)的極小值點(diǎn)相同,
求證:g(x)的極大值小于等于10.
一、ABBDA CCDBC DD
二、13、6; 14、x2+(y-3)2=1; 15、-8; 16、①③
三、17.(1)f(x)=2sin(2x+),T=π (2)x=或
18.(1);(2)Eξ=1.5 19.(1);(2)arccos;(3)a
20.(1)a1=5;a2=13;a3=33;(2)λ=-1;(3)Sn=n(2n+1+1)
21.(1)略;(2)a∈(-∞,3] 22.(1)y=±x;(2) =1
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺 | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話:027-86699610 舉報(bào)郵箱:58377363@163.com