Question

Уравнение касательной y=-1/X . Xо=-1

Answer 1

f(x) = -1/x, f(x0)=f(-1)= -1/(-1) = 1
f´(x)=1/xˇ2, f´(-1)=1/1=1
y-f(-1)=f´(-1).(x-(-1))
y-1=1(x+1), y-1 = x+1, y= x+2, x-y+2=0