<p>anyone wanna answer my last question?</p>
<p>@Nibblin, I got 6… I’m pretty sure all 6 were to the right of the y axis.</p>
<p>:(. do u guys remember any other tricky questions?</p>
<p>I got four points using the solve function. the two other points were negative.</p>
<p>I remember there was one question that was like if f(x)=ax^3+bx^2 and neither of them are 0 then which of the following much me true?
I. I was pretty sure this was true
II. I was pretty sure this was false
III. There must be 2 distinctive roots.</p>
<p>I think I said I and III because whenever I graphed it there were always 2 roots.</p>
<p>It was there must be two distinct roots (0 and -b/a) and that the range is all real numbers</p>
<p>@nibblin
I still have the equation I solved in my TI89. If you do solve(-1200cos(pi/6t)+1500=1200(1.025)^t,t) you get two negative solutions (t=-9.9,-2.4) and four positive (t=2.6, 9.0, 28.7,30.9)</p>
<p>expand the x window and you’ll see 6 intersection points</p>
<p>@karatekid666
Yes, but as several people have said, 2 of them are negative.</p>
<p>@runallday, what was option II</p>
<p>I have no clue. I’m pretty sure II was wrong though.</p>
<p>For the town population ones, have you guys tried graphing it? I’m still getting some different results than all of you.</p>
<p>solve function</p>
<p>@runallday4
Do you have the same two functions I mentioned? Radian mode?
On the main screen, type Y1(-2.40283) and then Y2(-2.40283) and you’ll see that they give the same answer (population). Do the same for the other negative solution (-9.92982).</p>
<p>There goes my 800 lol . 750 new objective :(</p>
<p>What the numbe of roots of f(x).g(x) ?
Was it 2,3 or 4 OR was it 2 or 4 ?</p>
<p>Also what was the answer to this questions :
F(x) = ax^3 + bx^2
(i) it has two distinct roots
(ii) it is greater than one
(iii) its range is all real numbers or something like that…</p>
<p>@adi2915
it’s i and iii, i chose iii, glanced at it quick and saw the 3rd exponent, thinking there would be 3 roots. sigh</p>
<p>It could be 1 too question said they had different roots at least from one point or something</p>
<p>Ohhh… :/</p>
<p>can anyone answer my question on the f(a+2), the very last one</p>