F(X) = (2/3)(X-2)^(-1/3) F'(X)= (-2/9)(X-2)^(-4/3) F''(X) = (8/27)(X-2)^(-5/3) Is F''(X) correct???
Follow Math Help Forum on Facebook and Google+
Hi. Originally Posted by Brazuca F(X) = (2/3)(X-2)^(-1/3) F'(X)= (-2/9)(X-2)^(-4/3) F''(X) = (8/27)(X-2)^(-5/3) Is F''(X) correct??? No! I think it is a typo, but it is (F'(X) is correct!) Yours Rapha
Wasn't a typo. I just had it incorrect. Thanks now I understand how it works.
I have two more questions involving this problem. F(X) = (2/3)(X-2)^(-1/3) when X = 1 why is the final answer negative? F'(X)= (-2/9)(X-2)^(-4/3) when X = 1 why is the final answer negative?
Originally Posted by Brazuca I have two more questions involving this problem. F(X) = (2/3)(X-2)^(-1/3) when X = 1 why is the final answer negative? Just substitute X=1, then We know that Therefor Furthermore we know that and Thus Originally Posted by Brazuca F'(X)= (-2/9)(X-2)^(-4/3) when X = 1 why is the final answer negative? Same here
View Tag Cloud