in advance!!!!? r(t) = < ln(12t), sqrt(t+19), 1/(sqrt(7-t)) > ... where r is a vector
****I know that the first one is t>0 and the second one is t>=-19 and the last one is t<7, but the computer keeps telling me that I'm wrong. The answer is supposed to be in Interval notation, so wouldn't it be (7, +INF)? Can someone please correct me and tell me what I'm doing wrong? Thank you so much!!! I appreciate all of your help!!!!****
****I know that the first one is t>0 and the second one is t>=-19 and the last one is t<7, but the computer keeps telling me that I'm wrong. The answer is supposed to be in Interval notation, so wouldn't it be (7, +INF)? Can someone please correct me and tell me what I'm doing wrong? Thank you so much!!! I appreciate all of your help!!!!****