1)f´(x)=-2xˇ2+4x-1
2)f´(x)=-xˇ2+8x+2
3)g´(x)=(-8/xˇ3 )+1
4)g´(x)=-4/xˇ3
5)g´(x)=-3.sinx, g´(-5pí/6)=-3.sin(-5pí/6)=-3.(-1/2)=3/2=1,5
6)g´(x)=-4/siˇ2x, g´(-2pí/3)=-4.(1:3/4)=-16/3
7)h´(x)=(2.(x-2)-(3+2x))/(x-2)ˇ2=(2x-4-3-2x)/(x-2)ˇ2=
=-7/(x-2)ˇ2 , h´(1)=-7
8)h´(x)=(3(x-3)-(3x+4))/(x-3)ˇ2=-13/(x-3)ˇ2, h´(4)=-13