This week has been a very difficult week for me. Some of the things taught on the board looked so easy until I actually had to do them on my own THEN the next day in class when it would be explained, it would look completely easy again.
What I DO understand is the rational root theorem. Everything else is somewhat difficult for me to comprehend.
Since I just got my calculator on Tuesday, I didn't quite understand how to plug things in. I don't understand the Window thing AT ALL so I just don't really use it... Also, since I don't know how to zoom out to see the entire graph, I can't really do the max and min either >.< It took me the longest time to find X which was actually staring me straight in the face the whole time.
I do know I failed the text (>.< again) but... I don't know how to explain it... for some reason the way the question is on the test completely confuses me compared to how it is written in the book. Maybe that is just because when we do things in the book, it is explained to us mostly by B-Rob. (I hope you don't mind me typing "B-Rob")
Subscribe to:
Post Comments (Atom)
If you end up messing up your window, you can reset it to it's defaults, by pressing "zoom" and selecting option 6, "ZStandard". This will restore your default zoom settings of
ReplyDeletexmin=-10
xmax=10
xscl=1
ymin=-10
ymax=10
yscl=1
xres=1
If that sounds like greek to you aren't alone.
For more calculator help, refer to the TI-84 Plus guidebook at:
http://education.ti.com/downloads/guidebooks/graphing/84p/TI84PlusGuidebook_Part2_EN.pdf
Viewing Window Variables are explained on page 108.
the window thing is pretty easy to tell you the truth, all you have to do is look at your graph and see what parts of the line are not showing then you go to the window screen and guess and check it.
ReplyDeletei've also been kinda wondering about the word problems. i know its kinda late to ask but better late than never.
ReplyDeleteFind the dimensions that will give the maximum area for a rectangular enclosure ifyou only have 200ft of material.
A = l x w
so the two shorter sides equal x and the longer sides equal 200-2x over 2... my question is, why?
i get the 200-2x bit but why do you put it over 2? i know the answer probably is the most obvious thing, but i just need to get a better understanding of it...