<p>Here, we can talk about any questions that we have or exchange tips. We can also go over the test after it is taken.</p>
<p>Are you using any books to prepare?
I recently bought the Barron’s one but I’ve realized that I basically don’t remember anything from Geometry and Algebra 2</p>
<p>Use Barron’s to learn, and Dr. Chung to build speed. Barron’s is pretty good for learning, but its tests are based on learning the concepts and somewhat applying them, whereas the actual test is pretty application based. Major problem for me was lack of speed, which Barron’s did not prep me for. Chung’s is more accurate (still harder than the actual) and will help you with practice. Barron’s practice is best used untimed; just look through your wrong answers and understand why your answers are wrong.</p>
<p>I took all but the last two Barron’s tests timed; the last two I used as learning guides.</p>
<p>Barron’s is great - if you use it to prep, you’ll breeze through the real deal. Also get the official College Board tests and take those timed a week or two before the actual test. I used these two prep books and got an 800.</p>
<p>Joining this club - have SAT Math II by Barrons and the collegeboard book.</p>
<p>What sucks for me is that I never took a precalc course and got skipped straight to calculus which I did in sophomore year. I’m a senior now…and this is my last chance for testing and I’ve been very busy so prep has been hard. I’m going to spend the next week hardcore studying.</p>
<p>Ecouter, I’m a sophomore, and I’m self studying Calc BC. Never had a pre-calc class either.</p>
<p>Going to intensively study the next week.</p>
<p>This is going to be my second time taking it (I got a 690… last November). Using Barron’s and the Official one. </p>
<p>Does anyone have tips for probability and combination? I’m having a hard time on that…</p>
<p>^ Same here</p>
<p>hi everyone, i want to download free barron’s math2 can you tell me where i can get it free</p>
<p>HELLO I am stuck with one question from Barron’s book ( Model Test 1, question 47). Here’s the question,
If f(x) = 3x(square) + 4x + 5 , what must the value of k equal so that the graph of f (x-k) will be symmetric to the y axis?
They gave an answer but one involving a graphing calculator. I do not know how to use a graphing calculator. It is forbidden in high school in my country. Any other way to find the answer.</p>
<p>f(x) = 3x^2 + 4x + 5</p>
<p>in completed square form:</p>
<p>3(x + 2/3)^2 + 11/3</p>
<p>The graph will be symmetric around the y axis when its vertex is at (0, a), where a is any value. The vertex, from the above equation, is at (-2/3, 11/3). Hence, we need</p>
<p>-2/3 + k = 0
k = 2/3</p>
<p>To check that, plug this value back into the equation</p>
<p>f(x - 2/3) = 3(x - 2/3)^2 + 4(x - 2/3) + 5</p>
<p>which in squared form is indeed</p>
<p>3(x + 0)^2 + 11/3 = 0</p>
<p>which has center at (0, 11/3) and is therefore symmetric around the y-axis.</p>
<p>// Alternatively, you could use calculus to find the vertex</p>
<ul>
<li>Find the first derivative </li>
</ul>
<p>f’(x) = 6x + 4</p>
<ul>
<li>Set it equal to zero, which yields stationary point(s)</li>
</ul>
<p>6x + 4 = 0
x = -2/3</p>
<ul>
<li>Hence the x coordinate of the vertex is -2/3. In order for this coordinate to be zero, we need to add 2/3 = k.</li>
</ul>
<p>@cakane7 For the function f(x) = 3x^2 + 4x + 5, the x-coordinate of the vertex occurs at x = -b/2a = -4/(2*3) = -2/3. </p>
<p>The function f(x-k) simply represents shifting f(x) to the right by k units. We want the x-coordinate of the vertex to be x = 0, so we shift f(x) to the right by 2/3 units. Setting k = 2/3 works.</p>
<p>Thanks guys. I do not why I didnt think about this. It was kinda obvious.
Am I the only one who thinks that Barron’s is ridiculously hard. I have a question, is the formula provided by barrons to calculate the scaled score accurate ( 800 - 10 (44- R) ) , R is the raw score.</p>
<p>yes , it is. How are you guys doing? I have midterms the same week as the test so im going HAM</p>
<p>Should the calculator be set to degree mode or radian mode for the test? Most problems that I see require degree and I have yet to see a problem dealing with radians…</p>
<p>Either or is fine…I think mine was set to radians when I took the math 2, and I just multiplied by 180/pi when I needed degrees.</p>
<p>Dr. Chung is killing me…</p>
<p>I usually just switch between degree and radian as needed.</p>
<p>I had around a 720 or 740 on the barron’s diagnostic test, it was hard. 
I can’t believe it’s a week away, that really sucks.</p>
<p>The Barron’s diagnostic is easier than the practice tests, from my experience. Try one of the prac exams and see how you do. I got 640, 640, and 710 on the three Chung tests I took. The third one (710) I did untimed.</p>
<p>Anyone remember how to graph 3D equations? Its one of the later qs on the 3rd practice test and I can’t think how.</p>