F(x)=√5-x² f'(x)=-2x*1/2√5-x² x=-2 f'(x)=2
f(x)=1/4cos4x f'(x)=-sin4x x=π/16 f'(x)=-sinπ/4=-√2/2
f(x)=√x²-8 f'(x)=2x/2√x²-8=x/√x²-8 x=3 f'(x)=3
f(x)=1/2*sin2x f'(x)=cos2x x=π/8 f'(x)=cosπ/4=√2/2
f(x)=sin(1+2x) f'(x)=2cos(1+2x) f'(x0)=2cos (0) =2
sin(1+2x)=sin(0)=0
y=2(x+0.5)+0=2(x+0.5)
f(x)=cos(1+4x) f'(x)=-4sin0=0
f(-0.25)=1
y=1