k²+4根号2k+1大于零 k²+4根号2k+1大于零

来源：学生作业帮助网编辑：六六作业网时间：2024/12/20 00:25:37

k²+4根号2k+1大于零k²+4根号2k+1大于零k²+4根号2k+1大于零k²+4根号2k+1大于零k²+4根号2k+1大于零k²+4根

k²+4根号2k+1大于零 k²+4根号2k+1大于零
k²+4根号2k+1大于零
k²+4根号2k+1大于零

k²+4根号2k+1大于零 k²+4根号2k+1大于零
K^2+4根号2+1＞0,则
（K+2根号2）^2-7＞0,调整后：K属于（根号7-2根号2,正无穷）或（负无穷,-根号7-2根号2）