利用函数图像判断下列方程实数解的个数,并求出它的近似解(精确到0.1) (1)x2+2x-4=0 (2)-x2+2x-2=0过程尽量详细点 有图像更好 谢谢~
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/09 15:24:44
![利用函数图像判断下列方程实数解的个数,并求出它的近似解(精确到0.1) (1)x2+2x-4=0 (2)-x2+2x-2=0过程尽量详细点 有图像更好 谢谢~](/uploads/image/z/3770860-4-0.jpg?t=%E5%88%A9%E7%94%A8%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%E5%88%A4%E6%96%AD%E4%B8%8B%E5%88%97%E6%96%B9%E7%A8%8B%E5%AE%9E%E6%95%B0%E8%A7%A3%E7%9A%84%E4%B8%AA%E6%95%B0%2C%E5%B9%B6%E6%B1%82%E5%87%BA%E5%AE%83%E7%9A%84%E8%BF%91%E4%BC%BC%E8%A7%A3%EF%BC%88%E7%B2%BE%E7%A1%AE%E5%88%B00.1%EF%BC%89+%EF%BC%881%EF%BC%89x2%2B2x-4%3D0+%282%29-x2%2B2x-2%3D0%E8%BF%87%E7%A8%8B%E5%B0%BD%E9%87%8F%E8%AF%A6%E7%BB%86%E7%82%B9+%E6%9C%89%E5%9B%BE%E5%83%8F%E6%9B%B4%E5%A5%BD+%E8%B0%A2%E8%B0%A2%7E)
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