231․
a) f(x) = 5 x0=2
f'(x0)=0
f’ (2)=0
232
a)f(x)=3x-2 x0=3
f'(x)=(3x)’-2’=3-0=3
f'(3)=3
(3x)’=(x+x+x)’=1+1+1=3
(3x^3)=3.3x^2=9x^2
233
f(x)=x^2
f'(x)=2x x0=7,5 x0=-9.25
f'(7.5)=2.7.5=15
f'(-9.25)=2.(-9.25)=-18.5
234
f(x)=1\x=x^-1
f'(x)=(x^-1)’=-1.x^-2=-1\x^2
f'(0.5)=1\0.5^2=-4
235
f(x)=2x^2-1
f'(x)=(2x^2)’-1=2.2x=4x
f'(2)=4.2=8
236
f(x)=x^3
f'(x)=3x^2
f'(1)=3.1^2=3
237
f(x)=1\x+3 x0=-4
f'(x)=-1(x+3)^2
f'(-4)=-1(-4+3)^2=-1\1=1