北大版高等數(shù)學(xué)第四章 微分中值定理與泰勒公式答案 習(xí)題4.5

1、習(xí)題習(xí)題4.5x(?????)32?32(?0)320(0?)3232(?)32f??00?0f?拐點(diǎn)?拐點(diǎn)?拐點(diǎn)?x(0)??0(01)1(12)2(2)??y??00?y????y??極小值??拐點(diǎn)??極大值??????????22222222222321.()()212()12(2)436423200.2xxxxxxxxfxxefxexeexfxexxxeexxxexx????????????????????????????求函數(shù)

2、的凸凹性區(qū)間及拐點(diǎn).解=2321().32(2)002.2201.yxxxyxxxxxyxx???????????????????作下列函數(shù)的圖形：2.x(1)???1?(11)?(15)5(5)??y?0?0y???0yA?拐點(diǎn)A?A?極小值A(chǔ)?32223422244323226(1)5.1.(1)3(1)(1)2(1)(1)(1)(1)(1)(3322)(1)(1)(5)(1)(5)(1)(1)(1)015.[2(1)(5)(1)]

3、(1)3(1)(5)(1)(1)[2(xyxxxxxxyxxxxxxxxxxxxxyxxxxxxxxyxx???????????????????????????????????????????????22442422441)(5)(1)](1)3(1)(5)(1)(1)[2(5)(1)](1)3(1)(5)(1)(1)(39)(1)3(45)(1)(1)(3129)3(45)24(1)01.(1)(1)xxxxxxxxxxxxxxxxx