2002y=x³-3x²+16 [1;3]y`=3x²-6x=3x(x-2)=0x=0∉[1;3]x=2∈[1;3]y` _ +----[1]-------------[2]-------------[3]---------y miny(2)=8-12+19=152003y=(x-16)e^(x-15) [14;16]y`=e^(x-15)+(x-16)*e^(x-15)=e^(x-15)*(1+x-16)=(x-15)*e^(x-15)=0x-15=0⇒x=15∈[14;15]y` _ +----[14]-------------[15]-------------[16]---------y miny(15)=(15-16)*e^(15-15)=-12004y=(x-9)e^(x-8) [7;9]y`=e^(x-8)+e^(x-8) *(x-9)=e^(x-8)*(1+x-9)=(x-8)*e^(x-8)=0x-8=0⇒x=8∈[7;9]y` _ +----[7]-------------[8]-------------[9]---------y miny(8)=(8-9)*e^(8-8)=-12005y=(x-12)e^(x-11) [10;12]y`=e^(x-11)+e^(x-11) *(x-12)=e^(x-11)*(1+x-12)=(x-11)*e^(x-11)=0x-11=0⇒x=11∈[10;12]y` _ +----[10]-------------[11]-------------[12]---------y miny(11)=(11-12)*e^0=-12006y=(x-20)e^(x-19) [18;20]y`=e^(x-19)+e^(x-19) *(x-20)=e^(x-19)*(1+x-20)=(x-19)*e^(x-19)=0x-19=0⇒x=19∈[18;20]y` _ +----[18]-------------[19]-------------[20]---------y miny(19)=(19-20)*e^0=-1