题目1单选题
函数f(x)=-lnx+2x2的递增区间是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/835b9778148a361d8babad4118489cdb.png">和<img src="https://tihai-oss-cloud.itihey.com/img/21fc663d0660b56c9f741b4d2c0b620b.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/3887c618b20ee5a7d8cbebf0367f31ca.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/835b9778148a361d8babad4118489cdb.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/21fc663d0660b56c9f741b4d2c0b620b.png">