0.15x^3-x^2-0.6x+3.1=-|1.6x|+2.2

解

0.15 x^{3} - x^{2} - 0.6 x + 3.1 = - ∣ 1.6 x ∣ + 2.2

x = - 2.02738 \dots or x = 2.08283 \dots or x = 5.14385 \dots

解答ステップ

0.15 x^{3} - x^{2} - 0.6 x + 3.1 = - ∣ 1.6 x ∣ + 2.2

正と負の区間を求める

x < 0, x \geq 0

各区間の不等式を解く

x = - 2.02738 \dots or (x = 2.08283 \dots or x = 5.14385 \dots)

x = - 2.02738 \dots or x = 2.08283 \dots or x = 5.14385 \dots