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(part of #21 Pg 451; similar #20 done in class) At the right are the graphs of
[ y = 7250 - 18x2 ] and [ y = 3620 + 12x2 ]. |
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(a)(2 pts, show work, not merely calculator output) Find the value of b,
which is the right limit of the shaded area. You will need to solve a
factorable quadratic equation (if you have done the take-home test problems,
this will be easier). If you cannot find "b", assume b=10 in [1b] below. |
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(b)(3 pts) Without using a graphing calculator, express the area shaded at the right as a single definite
integral by entering specific integers (such as 3, -2, or 0) in the 5 empty
answer boxes below. Note that in the original version of this problem, the
shaded area was a "lifetime profit".
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( |
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x2 + |
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x + |
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dx |
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x )2
is not equal to
