<p>Hello,
Do you know of the CollegeBoard allows students to add formulas in their calculator ? (in a file, for instance).
Thank you :)</p>
<p>They don’t wipe your calculator or check its data so it seems like they don’t set much rules related to this. It’s up to you to interpret this information. I cannot tell you with absolute certainty whether you are allowed to put formulas on ur calc or not.</p>
<p>I would like to know this too. I dont want to waste time memorizing formulas if I will have access to them on my calculator. Any experiences with this?</p>
<p>There aren’t that many formulas that require a lot of memory, if I recall correctly. What formulas or theorems are you having trouble memorizing (or feeling that you might have trouble memorizing)?</p>
<p>Well, when I practice, there are sometimes one or two questions that I can’t answer because I can’t remember the formula.
There are several formulas that my math professors haven’t covered yet (for instance, formulas dealing with sequences). These are the ones thatnI sometimes forget.
However, I mostly wanted to add formulas such as half angles formulas because there are many of them.</p>
<p>I have another question (that is not quite related to the topic): I’ve tried practice tests in McGraw Hill’s book. They seemed easier than other practice tests that I previously tried. Are they close to the actual test ?</p>
<p>Thank you :)</p>
<p>Please people, do not over use your calculator. Its a huge problem among students to use calc for every small thing. It only weakens your computation and brain power. Learn formulas instead specially trigo formulas.</p>
<p>AP - nth term - A+(n-1)D
sum to Nth term - N/2*(2A + (n-1)D)</p>
<p>Gp nth term - ar^(n-1)
sum - a(r^n - 1)/(r-1)</p>
<p>infinite AP - a/(1-r) - for normal powers</p>
<p>Use binomial theorem for -ve power</p>
<p>I suggest not memorizing the formulas regarding arithmetic sequences. Even for me, I might forget and screw up a rather easy problem. Instead, you should be familiar with the general technique associated with finding the sum (think Gauss sums).</p>
<p>I don’t think SAT II tests half-angle formulas but they can be derived without too much work. It is a good idea to memorize the more basic trig identities though.</p>
<p>@shauryagupta define “normal power.” Infinite geometric series converges when |r| < 1.</p>
<p>incomplete sentence Sorry :D,
i meant use binomial EXPANSION for opening of (a+bx)^n where n<0 . and multinomial theorem for (x+y+z)^n .</p>
<p>dont know, question might come from this.</p>
<p>(a+bx)^n (n<0) = 1 +nx+ n(n-1)/2! *x^2 + n(n-1)(n-2)/3!*x^3 …---->n</p>