<p>i just skipped the last 10 (18 in total)...not expecting a good score</p>
<p>I didn't know the cyclinder formula either. I did know that the radius needs to be squared, and that the height does not. You don't really need the formula. Just square 1.25, multiply it by 1.5 and multiply their product by 16.</p>
<p>yeah, I did what chen did. Can't remember my answer though.</p>
<p>ChenChen: OOoh yeah, I got 30 as well... thank GOD! Shows the importance of ignoring stuff that doesn't matter.</p>
<p>How were you suppose to do the one with the man and the wife going on the same road? I remember the man was going 50 miles per hour and the wife left one hour later at 60 miles per hour, something about noon and t>=1?</p>
<p>And there was one that said the phase shift was defined as the reciprocal of the period, it was 1/2 right?</p>
<p>specify: The question was to find the expression for the distance between the husband and wife after t hours...which would be </p>
<p>|t-1|+50 (if I remember correctly)</p>
<p>The phase shift thing...I put pi.. lol (I believe the correct ans. is 1/pi)</p>
<p>ah crap I forgot it's suppose to be 2pi over the coefficient of the x for the period.</p>
<p>wait, for the man and woman driving, i put |10t-40|, which is when the number of hours that the man and woman driving would have been the same....2 hours for the guy and 1 hour for the girl...idk wat i was thinking, its pbly wrong</p>
<p>wat about the one that said, (sqrt(t), t)..i said part of a parabola????</p>
<p>lmao i put |10t - 50|..</p>
<p>and yeah, part of parabola.</p>
<p>Also, that shifting question, I put 1/pi, cause the question defined it as "one over the period". The period is 2pi/coeff of x, which is pi. So answer is 1/pi.</p>
<p>bpatel890: If the answer is |10t-40| : For example</p>
<p>After 1 hour, the distance between the two is 50 miles, because the man has been going at 50 mph for 1 hr and the woman has not started. When you plug in 1 into that you get 30.</p>
<p>yeah, that cylinder one was 37.5, which i got, but somehow for some reason, divided by pi...????im stupidddddd</p>
<p>"Intersection of three planes
Written by Paul Bourke
October 2001</p>
<p>A contribution by Bruce Vaughan in the form of a Python script for the SDS/2 design software: P3D.py. </p>
<p>The intersection of three planes is either a point, a line, or there is no intersection (any two of the planes are parallel)."</p>
<p>got it wrong then lol</p>
<p>thanx haru....yeah, i didnt look at that one clearly...</p>
<p>haru:</p>
<p>i believe the domain of the function had to be for t > 1</p>
<p>disregard that comment. my bad lol ( i missed like three posts)</p>
<p>Oh I remember now, for the cylinder one I got around 37</p>
<p>how bout that question that said, which produces the same as f(x), when -x is plugged into it? i looked at it quickly, thought it was hard for some reason, and just moved on b/c of time contraints, but all u really had to do was find the function with all even exponents right?</p>
<p>for the husband and wife question, I used t=4 as an arbitrary time period. If that's the case, the husband would have travelled 4<em>50=200 miles, and the wife would have travelled 3</em>60= 180 miles. The distance was thus l10t-60l.
For any values of t being greater than 1, this works.</p>