Recent content by airken1

Hi Halls of Ivy, thank you for taking the time to look at my post. this is an older post, i think about 3.5 years ago and MarkFl was kind enough to help me with it originally. to your question, unfortunately I've forgotten all about this one, and couldn't tell you if i might have made a...

Re: natural log derivative sorry, you're right, couldn't see the first ' and thought i forgot it. thank you for the help, and thank you for explaining the law of logs, i was having probs with that. i get A and i hope my kid gets one too. thanks again for the help

Re: natural log derivative Wow! that was sooo fast. thank you for the help. sorry, i should have thought to provide the answers here they are. a) 3+ln(x^3) b) 1+ln(x^3) c) (3/x)+3lnx d) 3/(x^2) e) 1/x thank you again for the help

[FONT=Verdana][FONT=Arial]if f(x)= 3x lnx, then f ' (x)=? [FONT=Verdana][FONT=Arial]i used [FONT=Verdana][FONT=Arial]f' ' (x)=3x(D lnx) + D (3x) (lnx) [FONT=Verdana][FONT=Arial]f ' '(x)=3x (1/x) + 3 (lnx) [FONT=Verdana][FONT=Arial]so... f ' '(x)=3+3lnx or 3(1+lnx)...