[福州一检]福州市2023届高中毕业班第一次质量检测数学答案

[福州一检]福州市2023届高中毕业班第一次质量检测数学答案，目前我们已经整理了[福州一检]福州市2023届高中毕业班第一次质量检测数学答案的各科答案和试卷，更多全国名校联考答案，请关注本网站。

解：(1)f'(x)=x2-2x-3=(x-3)(x+1),(1分)令f'(x)>0,解得x<-1或x>3,令f'(x)<0,解得-1x<3,所以f(x)的单调递减区间为（一1,3），单调递增区间为（一∞，一1），(3，十∞).(4分)(2②)由1)知，fx)的投小值为f3)=号×3-32-3X3+m=-6,解得m=3.(7分)(3)由(1)知，f(x)在区间（一3，一1）上单调递增，在区间（一1,3）上单调递减，在区间(3,4)上单调递增，(8分)f(-3)=×(-3)°-(-3)2-3×(-3)+3=-6，33×(-1)°-(-1)2-3×(-1D+31465f(-1)=3f(3)=×3-3-3X3+3=-6,3f4)=3×43-4,3×4+3=113f(x)在区间[-3,4]上的最大值为g,最小值为-6.天是，(12分)

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