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
① <imgwidth="18"height="18"v:shapes="_x0000_i1311"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">正交则<imgwidth="22"height="22"v:shapes="_x0000_i1312"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image400.png">正交
② <imgwidth="36"height="22"v:shapes="_x0000_i1313"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image402.png">正交则<imgwidth="30"height="18"v:shapes="_x0000_i1314"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image404.png">也正交
③ <imgwidth="18"height="18"v:shapes="_x0000_i1315"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image008.png">正交则<imgwidth="62"height="22"v:shapes="_x0000_i1316"src="http://wljy.whut.edu.cn/uploadfiles/word/xxds04.files/image406.png">