You have made an error in your second line, where you apply the product rule within the parentheses...you want a sum not a difference.
does this look right? https://www.dropbox.com/s/j7uatrtkdu...2022.41.07.jpg
if not..where did i mess up? and why does my ti-nspire cas give Undef as the answer?
thanks
*****updated*******
how about now???
https://www.dropbox.com/s/8430a2fy66...2023.16.02.jpg
It is much less likely that anyone will know you have posted another attempt if you simply edit your first post. The topic will not appear to be updated unless the reader clicks on it to read it. You should post a new reply for updates, as a new reply will show that there is unread information.
Yes, this looks right...I recommend writing the tangent line in slope-intercept form however.