Unformatted text preview: AMS 161 Final Exam A Prof. Tucker Spring 2008
13333. ~ 6f hawk _
1. Do thre of the follow1ng problems: a) OJJI[cos(3x)—j:]dx,b),[x2sin(e3x3)e3x3dx, c) I 2x/(x—3)aix,aix, (1)} (3x+l)/sqrt(x+3)aix, x6 ’6 {jg ‘ 8 . 4 11 3
2. Do two f the followmg problems: a) ,i x cos( 3x) dx , b) ,i ln(2.x)/x dx , c) ,i x e dx IZBQ‘E“ 6 W ' 0° 8 J5 1/2 00 3
. valu te two of the follow1ng (explain answers): a) 0 3t7e't dt, b) 0 1/(x—2) dx, c) 2f 1/(x+3) dx. 34?y Consider the integral from 0 to 2 of the function sketched at the right.
List the values in INCREASING ORDER of the integral estimates given
by the LH = Left—Hand Rule, RH = RightHand Rule, MP = MidPoint Rule,
and TP =Trapezoidal Rule in increasing order. Also indicate the position in t is ordering of the true integral.
‘0 . Do one of the following problems (JUST SET UP THE INTEGRAL): ,, z
a) Set up an integral for the volume of revolution around the y—axis (NOT x—axis) of y = 2(x+ 3 )3/2 from y=0 to
y=2. b) Set up an integral for the volume resulting from revolving the area between the curves y = 10x and y =
xZ—l between 1 and 2 about the line y = 6. . Do two of the following three problems: JUST SET UP THE INTEGRAL:
% ) A thick rope holding a bucket of unused calendars, weighing 301bs., hangs from the top of a 40—foot high
building. The rope weighs 4 lbs. per foot. Set up an integral for the work to raise the bucket of from ground
el up to 20 feet above the ground. 1
\ A 200foot hi h dam is sha ed b the s mmetric function = s rt (2x+1) —1 The water level is at the top of
g P y y y q .
the dam. Set up an integral that gives the total water pressure against the dam. Water weights 62.4 lbs per CllblC fo .
[l ,
\ c) ater is being pumped into trough that is 15 long, 5 feet dept and has V—shaped ends that are 8 feet across at
the top (0 feet across at the bottom) Set up an integral for the work required to pump water up from ground
leve to fill the trough. Water weights 62.4 pounds per cubic feet. 7. Determine by direct computation the terms up to x3 in the Taylor series for 1/(x+1)3. Show f’,f”,f’”. /
béb) From part a), determine the terms up to x6 in the Taylor series for 1/(3x2 + 1)3.
‘0 c) Determine the terms up to x4 in the Taylor series for cos(x)/(3x2+l)3, where cos(x) = 1—x2/2! +x4/4! —x6/6! 6aiirDetermine the radius of convergence of the series 1 + 3x/23 + 32x2/23 + 33x3/23 + 34x4/23 + 35x5/23 + . 9. Solve both DE? a) y' = 2.xe‘y, y(0) = 0. gy" — 6y’ + 8y = 0, y(0) = 2, y'(0) = 6.
0. Set up a Diff. Eqn. and solve it with given conditions for BOTH of the following two problems. \0 a) Newton’s Law of Heating says that the rate at which the temperature of a cool object warms up to room
temperature is proportional to the temperature difference between the object and the room. Cold coffee in a cup
comes out of the refrigerator at 50 ° F. into a room at 60° F. and in 10 minutes the coffee is 55° F. Find the mperature of the coffee in the cup as a function of time (in minutes) since coming out of the refrigerator. \6 .) A reservoir holds 4,000,000 gallons of water. PCPs have started polluting the water, flowing into the
reservoir at a concentration of .002 ounces per gallon of water. Each day 200,000 gallons of polluted flow into
the reservoir and 200,000 gallons flow out of the reservoir into a nearby town’s drinking water. Initially the
reservoir has no PCPs. Set up and solve a differential equation for y(t), the amount of PCPs (in ounces) in the reservoir as a function of time (in days). ...
View
Full Document
 Spring '08
 Tucker

Click to edit the document details