Monday, January 12, 2009

Homework due 01/13/09

Do problems 1, 2, 5, 6, 7 & 9 on page 136 of your textbook. You may want to keep your formula sheets or your notes from class on the rules of differentiation handy when attempting these.

2 comments:

Anonymous said...

I don't see much of a correlation between my f'(x) values and -sin(x) values. For example for the value 0.6 I did:

cos(0.6+0.001)-cos(0.6)/.001

that resulted in -824.5108443 whereas -sin(0.6) is -.5646424734

Anonymous said...

Firstly, make sure you're in radian mode for any calculator calculations. Next, make sure that you are typing it into your calculator correctly. I just did the calculations myself and I'm getting a value close to the -sin(x) value for that particular point you cited. I have a feeling you may have typed it into the calculator just as you have typed it into your comment on the post. This means that you have subtracted cos(0.6)/0.001 from cos(0.6001) instead of (cos(0.6001)-cos(0.6))/0.001
Hope this helps.