题型:填空题 题类:常考题 难易度:普通
估算一元二次方程的近似解
x | 0 | 1 | 2 | 3 | 4 |
x2+2x﹣9 | ﹣9 | ﹣6 | ﹣1 | 6 | 15 |
x | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 |
x2+12x﹣15 | ﹣.59 | 0.84 | 2.29 | 3.76 | 5.25 |
x | 1.2 | 1.3 | 1.4 | 1.5 |
x2+x﹣3 | ﹣0.36 | ﹣0.01 | 0.36 | 0.75 |
x | 0 | 0.5 | 1 | 1.5 |
x2﹣4x+2 | 2 | 0.25 | ﹣1 | ﹣1.75 |
x | 5.12 | 5.13 | 5.14 | 5.15 |
ax2+bx+c | ﹣0.04 | ﹣0.02 | 0.01 | 0.03 |
x | 1.3 | 1.4 | 1.5 | 1.6 | 1.7 | 1.8 | 1.9 |
k | ﹣0.71 | ﹣0.54 | ﹣0.35 | ﹣0.14 | 0.09 | 0.34 | 0.61 |
试题篮