\H(0.5)=2X^3-3X^2+8X-2

解答

H (0.5) = 2 X^{3} - 3 X^{2} + 8 X - 2

X \in R 无解

求解步骤

H (0.5) = 2 X^{3} - 3 X^{2} + 8 X - 2

交换两边

2 X^{3} - 3 X^{2} + 8 X - 2 = H (0.5)

将

2

到右边

2 X^{3} - 3 X^{2} + 8 X = 未定义

因此

X \in R 无解

1 e^{15} = 10 e^{16}

3 t^{3} + 4 t^{2} - 5 t - 2 = 0

so l v e f or x, x^{3} - 3 x^{2} + x - 3 = 0

2.9 = b^{3}

- 6 x^{3} + 15 x^{2} - 36 x + 15 = 0