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Unformatted text preview: Name: w MA 1021  2008 B Term Section A02
December 15, 2008 Quiz — Sections 7.4 and 8.1 1. Find Isinsxcos3xdx (Iﬂpoints) E 1} {angx (I... SI—n1X) (of. )< JX 2.Iﬁnd jx3tan3‘(5x3)sec2(5x3)ak U: 4?“ (SK3) du: XZSQC1(SK3)§I’X (10poims) 3U: leLse¢l($K§ AX 3. Find Jxcosz xdx (10p0ints) ch szCOSXAX Au: Ax 0W: [L (I +Cos 2x)? dx 4. Find the solution to the following differential equation: d
jaw y(Jm4)=8 Be sure to express your answer in the format y = f(x)  2x AX __— (3)8:— (10 points) 5. Radioactive kryptonite has a half—life of 231 years. A sample of
strangely luminous green rock, believed to be left over from the
explosion of the planet Krypton, is found to contain 10% as much
kryptonite as would be found in a new sample. When did Krypton
explode? You may leave your answer in terms of logarithmic or
exponential functions. (8 points) k‘i‘
P(£)': l’(0)€ 231K M23!) ”a 35%): W0) ‘3 6. The rate of change in the size of the WP1 student population is
proportional to the number of students currently enrolled. There
are now 3000 students, and that number is currently growing at a
rate of 300 students per year. Give an expression for the number of
years until there are 5000 WPI students. You do not have to
evaluate your answer. (8 points) k: 3‘” : 0,!
3000 kl
PKt): P(o)e : 30006; ******* END OF QUIZ “HM“ ...
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 Spring '09
 Abraham
 Calculus

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