SATII Math IIC Formulas Repository:

Test Preparation SAT Subject Test Preparation
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<p>Memorizing the right formulas(or "storing" them in your calculator) seems to be an important part of getting a high score for SATII Math IIC. Why don't we start a repository of critical formulas for quick reference. Links will also be very helpful.</p>

<p>PS I already went through the first 10 pages of threads and found no live thread with similar purpose.</p>

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<p>law of cosines.
a^2=b^2+c^2-2<em>b</em>c*cosA</p>

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<p>I think the distance formula is definitely a must know, in 2 and 3 dimensions</p>

<p>2d: D = sqrt((x1-x2)^2 + (y1-y2)^2)
3d: D = sqrt(x1-x2)^2+(y1-y2)^2+(z1-z2)^2)</p>

<p>While we're on the subject of formulas, can someone please describe a procedure for how to store formulas on a TI-89? I've often heard people talk about this calculator's incredible formula storage abilities, yet I haven't found any instructions for how to actually do this... it would be appreciated.</p>

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<p>well you can just program em in</p>

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<p>lol so i guess this thread answered my calculator question...</p>

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<p>For programing formulas in Ti-89:
If you still have the default programs that's loaded on the Ti-89 Titanium, go to APPS. Then select a application called "notefolio." You can basically use it as a notepad. Just go to F2 "New notes".</p>

<p>Otherwise, just go to APPS -> Program Editor and put your formulas as a program. You access it by choosing to edit it.</p>

<p>Note: don't forget to archive everything</p>

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<p>just wondering.... one my programs doesnt come when I type in the name on my home screen... what could be the reasons?</p>

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<p>Aseemo:
Programs are usually different. Maybe you should double check that you have the right name for the program or it's in the right folder. (I usually like to use "var-link" instead of manually typing the names of my programs)</p>

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<p>yup that was it, thanks.</p>

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<p>so you can only STORE formulas, but you can't interactively plug stuff into thsoe formulas? you have to go to the home screen and actually type it all out?</p>

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<p>if you program them using program editor, you can do that</p>

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<p>what are the best practice tests aside from princeton review?</p>

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<p>Sparknotes maybe?</p>

<p>And here's what I have in my notefolio:</p>

<ul>
<li>formulas for sum or nth term of geometric and arithmetic series</li>
<li>sum of roots of a polynomial</li>
<li>product of roots in a polynomial</li>
<li>a bunch of trig identities</li>
<li>area of a triangle (0.5bc*sinA)</li>
<li>Law of cos</li>
<li>perpendicular distance between a line and a point</li>
<li>angle between 2 lines</li>
<li>basic rules about logs</li>
</ul>

<p>I just use the "find" thing to find what I need :)</p>

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<p>I should actually do that this weekend; storing the old formulas. On the last practice test I took, I wasn't able to do 2 or 3 of the questions simply because I didn't remember the formula.</p>

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<p>from all this talk....im assuming they dont clear calculators or anything before the test, is that right?</p>

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<p>Don't think so. You can have any program or anything.</p>

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<p>I've heard the test at the most advanced level is to see how well you can use your calculator.</p>

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<p>back of the barron's book formulas are important</p>

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<p>are there a lot? could you list some of them b/c I really can't buy a $20 book for 1 test</p>

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<p>Oh and they DID clear my calculator when I took it (in october), but I had nothing on it. Kids these days and their calculators........ :/</p>