1) f(-2) = 1/2*4 = 2
f ' = 1/2*2x = x
f ' (-2) = -2
y = 2 + (-2) (x-(-2)) = 2-2x-4 = -2-2x
2)
f(1) = 1 - 2*1 = -1
f ' = -4x
f ' (1) = -4
y = -1 + (-4) (x-1) = 1-4x+4 = 5 - 4x
3)
f(-3) = 9 - 6=3
f ' = 2x+2
f ' (-3) =-6+2 = -4
y = 3 + (-4) (x-(-3)) = 3-4x-12 = -9-4x
1) f(-2) = 1/2*4 = 2
f ' = 1/2*2x = x
f ' (-2) = -2
y = 2 + (-2) (x-(-2)) = 2-2x-4 = -2-2x
2)
f(1) = 1 - 2*1 = -1
f ' = -4x
f ' (1) = -4
y = -1 + (-4) (x-1) = 1-4x+4 = 5 - 4x
3)
f(-3) = 9 - 6=3
f ' = 2x+2
f ' (-3) =-6+2 = -4
y = 3 + (-4) (x-(-3)) = 3-4x-12 = -9-4x