<p>sorry you shouldnt have used dx/dt****</p>
<p>and JDharms, part b was actually the same answer as part a. when you subtract the 1 and divide by (x-1)^2, you get back to your same function.</p>
<p>kevinbaker931, did I say dx/dt? I meant dy/dt, my bad. I’m glad to know that I did a and b correctly.</p>
<p>no, that’s impossible kevin. The differential equation it gives you simply cannot factor in the initial condition of y(0) = 11. Sorry. You had to solve out for y(t) and then solve for your C.</p>
<p>but think about it. its not DISPLACEMENT its DISTANCE. the height shouldnt matter. the integral will give me the distance it traveled. i think i got like .8 something plus 14.2 something so my answer was like 15.027 blah blah blah meters</p>
<p>For the first question on FRQ, who lived further? I got the same…</p>
<p>proace- it wasnt the same, because caren had to go back for her book, remember? her distance was .4 less than his</p>
<p>you can’t just use an integral for arc length, you’ve got to use the arc length formula. Try reworking it with your TI-89, x’(t) = 2 and y’(t) = 9.8t or something like that. The two aren’t equal.</p>
<p>I know, but it said who lived further, not who traveled further. Her distance was only the triangle less than the total distance, which is the same.</p>
<p>total distance minus both triangles. The second triangle cancelled out the first entirely.</p>
<p>^ i made the SAME mistake, its actually the guy that lives farther, her journey restarts, you have to ignore the first 2 triangles</p>
<p>nope. they TRAVELLED the same distance, but he went the whole 1.6 miles to school and she went 1.6 miles INCLUDING going home and backtracking…so she lives further.</p>
<p>she’s closer… she went 1.6 miles including backtracking, he went 1.6 miles.</p>
<p>Right? She’s closer.</p>
<p>Oh crap, you’re right. I’m an idiot lol</p>
<p>ya’ll are scaring me.</p>
<p>closer, sorry. lol. yeah she lives 1.2 miles away and he is 1.6</p>
<p>No, kevin, they didn’t travel the same. I just messed up because I took out the backtracking but not the initial trip.</p>
<p>proace- yes they did travel the same. they both traveled 1.6 miles, but she lives 1.2 away and he is 1.6.</p>
<p>No, she traveled 1.8 miles…</p>
<p>He lives 1.6 away, she lives 1.4.</p>
<p>I think the distance was the same actually… I got 1.4 for the girl and if you dont count her going back, it would be 1.6 and I got 1.6 for the guy too. </p>
<p>For the rock concert one, do you divide the number of total hours/total number of people?</p>
<p>powerbomb - yes… I hope so…</p>