如果函数<imgwidth="136"height="48"v:shapes="_x0000_i1180"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image260.png">是某连续型随机变量<imgwidth="19"height="17"v:shapes="_x0000_i1181"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image262.png">的概率密度,则区间<imgwidth="37"height="27"v:shapes="_x0000_i1182"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image264.png">可以是()
①
<imgwidth="33"height="27"v:shapes="_x0000_i1183"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image266.png">
②
<imgwidth="37"height="27"v:shapes="_x0000_i1184"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image268.png">
③
<imgwidth="54"height="32"v:shapes="_x0000_i1185"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image270.png">
④
<imgwidth="33"height="27"v:shapes="_x0000_i1186"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb07.files/image272.png">