③ 存在常数<imgwidth="27"height="21"v:shapes="_x0000_i1179"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image260.png">使<imgwidth="116"height="27"v:shapes="_x0000_i1180"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb09.files/image262.png">
① <imgwidth="208"height="26"v:shapes="_x0000_i1153"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image176.png">必线性无关
② 若<imgwidth="14"height="14"v:shapes="_x0000_i1154"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image178.png">为奇数,则必有<imgwidth="266"height="26"v:shapes="_x0000_i1155"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image180.png">线性无关
③ 若<imgwidth="14"height="14"v:shapes="_x0000_i1156"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image178.png">为偶数,则<imgwidth="266"height="26"v:shapes="_x0000_i1157"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image180.png">线性无关