f'(x)=-8x+3; k= f'(x0)=-8×1+3= -5;
f(x0)=-4×1+3×1-5= -6;
y=f(x0)+f'(x0)(x-x0)
y=-6-5(x-1)= -6-5x+5;
y= -5x-1;
f'(x)=-8x+3; k= f'(x0)=-8×1+3= -5;
f(x0)=-4×1+3×1-5= -6;
y=f(x0)+f'(x0)(x-x0)
y=-6-5(x-1)= -6-5x+5;
y= -5x-1;