Math IIC





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Discus: SAT/ACT Tests and Test Preparation: October 2003 Archive: Math IIC
By Mekker3 (Mekker3) on Thursday, October 09, 2003 - 12:57 pm: Edit

Can anyone give me any tips before the test Sat? Also, what is the change of base theorem (for logs)... and does anyone know how to use matrices on a ti-89?

Thanks in advance to anyone who can help... I may be back later with more questions!

By Interested123 (Interested123) on Thursday, October 09, 2003 - 04:09 pm: Edit

Just put everything into your TI-89 and I guarantee a score of at least 700.

By Cold_Front (Cold_Front) on Thursday, October 09, 2003 - 10:15 pm: Edit

Change of base:

Log base b of c = log c / log b

By Kingdvl (Kingdvl) on Thursday, October 09, 2003 - 10:23 pm: Edit

Make sure you put it into your calc right :P I left out the 2 in the law of cosines on my calc and completely forgot to add it back on the test

By Jason817 (Jason817) on Thursday, October 09, 2003 - 10:26 pm: Edit

dont worry about matrices. It's uncommon to encounter any.

By Becks777 (Becks777) on Thursday, October 09, 2003 - 10:46 pm: Edit

u can make your life so much easier if u know a little bit of programming on the calc..........u can either make one yourself or download it somewhere from the internet....
Here are some of the programs on my calc:
1. type in the function and the calc will give out all the zeroes, min-max, vertex and stuff

2. type in an angle and u will get the ref.angle as well as all thr 6 trig function of it

3. type in any log function with any base and u ll get the answer

4. solve any degree polynomial equation

5. just plug in all the values for law of sines, cosines, and u get the answer

By Mekker3 (Mekker3) on Friday, October 10, 2003 - 01:58 pm: Edit

thanks for the help... those programs definitely seem helpful... but I would have no idea how to go about making them myself... and I don't have anything to connect my calculator to my computer (or at least I don't think that I do!) Thanks again though!

By Neona (Neona) on Friday, October 10, 2003 - 02:28 pm: Edit

Read the online manual for the Ti-89.

Neo

By Mekker3 (Mekker3) on Friday, October 10, 2003 - 02:49 pm: Edit

Thanks... but I think that it would take me too long to figure out lol... Can anyone help me w/ this question (it's #34 in Real SAT IIs Math IIC)

If x(subscript 0)=0 and x(subscript n +1)=radical(6+ x(subscript n)), then x(subscript 3)=

A) 2.449
B) 2.907
C) 2.984
D) 2.997
E) 3.162

By Mekker3 (Mekker3) on Friday, October 10, 2003 - 05:50 pm: Edit

sorry to bug y'all... but bump

By Jason (Jason) on Friday, October 10, 2003 - 06:12 pm: Edit

What it's saying is that to get to each subsequent term from the previous one, you add 6 and square root the result.

Start with 0 (this is the 0th term that is given in the question), and do this 3 times to get to the 3rd term, and you get (C) 2.984.

By Godis (Godis) on Friday, October 10, 2003 - 08:20 pm: Edit

plug x(sub 0) into the equation.

x(sub 1) = rad 6

x(sub 2) = rad (6 + rad 6)

x(sub 3) = rad (6 + rad(6 + rad 6))

2.984 (c)

By Nealyac (Nealyac) on Friday, October 10, 2003 - 09:19 pm: Edit

huh? is there a rad or sub button on the calcualtor?

By Jason (Jason) on Friday, October 10, 2003 - 11:41 pm: Edit

Rad = square root (illogical, I know...nothing to do with radians)

Sub = subscript

The question makes way more sense if you look at it with the correct formatting in 10 Real SATIIs.


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