UIL D

[bradp]

16) is the average year accounting leap years 365.25 days?
525600 / (365.25 * 24 * 60) - 1 doesn't give the right answer

56) nDeriv(4x^2sin(x),x,25) doesn't work... got the answer using the product rule but why doesn't it work in the ti83?

69) why is this even a seventh page question :P

[Roel]

16) I believe they are using an average year to be 365.256

69) lol, this question does not deserve to be in a calculator test. All you need is knowing how to get half of 3.16

[Celsion]

56) Using the Ti-83 I got [unparseable or potentially dangerous latex formula] and the same answer using the product rule. The answer key says [unparseable or potentially dangerous latex formula] though. What am I doing wrong?
Was this your problem also "bradp"?

[MistaPotta]

Think of 69 as a reward for people who don't just stop at 65.

And Roel, where do you get 365.256 from? If I think of 97 leap years each 400 years I get 365.2425 days on average.

[polymath25]

Wow, i can't wait to see UIL D just so i can see number 69.

[MistaPotta]

[AuSmith]

Looks like there are many kinds of years

http://en.wikipedia.org/wiki/Year#Seasonal_year

[MistaPotta]

07D-16...compared to an average year that accounts for leap years.

From Aaron's Wiki: 365.2425 days — the average length of a year in the Gregorian calendar

From Wiki on Gregorian Calendar - Of these 400 years, 303 (the "common years") have 365 days, and 97 - the leap years - have 366 days. This gives an average year length of exactly 365.2425 days - or 365 days, 5 hours, 49 minutes and 12 seconds.

And that's why I don't coach calculator good.

[Roel]

My coach gave me a paper with conversions a couple of months ago and that one caught my attention becuase i had been using 365.25 for the past few years. I believe 365.256 works for this problem.

[Quelloquialism]

[bradp]

Celsion
with nDeriv in deg mode i got 124 (what i did during the test and put down as the answer)
With the product rule, i got 2350
using nDeriv with rad mode i got 2450

[Celsion]

[hustonstreet]

For [unparseable or potentially dangerous latex formula]:

If you use the Product Rule:

[unparseable or potentially dangerous latex formula]

[unparseable or potentially dangerous latex formula]

Let [unparseable or potentially dangerous latex formula]

However, for every trigonometric function you have to convert the 25 degrees to radians. So, if I'm not mistaken it would look like this:

[unparseable or potentially dangerous latex formula]

Once you work it out, you will get [unparseable or potentially dangerous latex formula], and that is the correct answer.

If you want to be able to do this problem a lot quicker, use your TI-84/TI-83:

Go to [unparseable or potentially dangerous latex formula] and type:[unparseable or potentially dangerous latex formula],
Go to [unparseable or potentially dangerous latex formula] and type:[unparseable or potentially dangerous latex formula],
Make sure you're set to [unparseable or potentially dangerous latex formula] and your [unparseable or potentially dangerous latex formula] is on [unparseable or potentially dangerous latex formula],
Finally, go to [unparseable or potentially dangerous latex formula] and type [unparseable or potentially dangerous latex formula], look under your [unparseable or potentially dangerous latex formula], and you should see [unparseable or potentially dangerous latex formula]

Congratulations, you have just successfully solved [unparseable or potentially dangerous latex formula]

[hustonstreet]