第3章 3.4

(1)

$y = -2$ $\quad$ $y' = 0$

(2)

$y = -4x + 1$ $\quad$ $y' = -4$

(3)

$y = x^2 - 3x + 2$ $\quad$ $y' = 2x - 3$

(4)

$y = 4x^2 - 3x - 2$ $\quad$ $y' = 8x - 3$

(5)

$y = x^3 - 2x^2 + 6$ $\quad$ $y' = 3x^2 - 4x$

(6)

$y = x^4 - 2x^3$ $\quad$ $y' = 4x^3 - 6x^2$

(7)

$y = \dfrac{3x+1}{2} \qquad y' = \dfrac{3}{2}$

(8)

$s = 5 - 4t + 7t^3 - t^5$ $\quad$ $s' = -4 + 21t^2 - 5t^4$