(a) Find a polynomial function of degree 3 whose y-intercept is 5 and whose x-intercepts are − 2 , 3 and 5 . Graph the function. (b) Find a rational function whose y-intercept 5 and whose x-intercepts are − 2 , 3 and 5 that has the line x = 2 as a vertical asymptote. Graph the function.
(a) Find a polynomial function of degree 3 whose y-intercept is 5 and whose x-intercepts are − 2 , 3 and 5 . Graph the function. (b) Find a rational function whose y-intercept 5 and whose x-intercepts are − 2 , 3 and 5 that has the line x = 2 as a vertical asymptote. Graph the function.
(a) Find a polynomial function of degree
3
whose y-intercept is
5
and whose x-intercepts are
−
2
,
3
and
5
. Graph the function.
(b) Find a rational function whose y-intercept
5
and whose x-intercepts are
−
2
,
3
and
5
that has the line
x
=
2
as a vertical asymptote. Graph the function.
2.3 Vibration amplitude of a machine plotted against time shown in Fig. T2.3. is described by
sin(0.8+) In(t + 2)
x(t) =
t + 0.5
Here, t is in seconds and x is in millimeters
0.6
0.4
0.2
°
-0.2
mmm
-0.4
0
10
20
30
40
50
60
70
Time [s]
Fig. T2.3: Machine vibration amplitude variation against time
Obtain the vibration velocity as a function of time, x(t), if it is measured by a vibration velocity sensor.
Example(1):
(Adiabatic humidification and cooling of
air). Air has to be humidified and cooled
adiabatically in a honzontal spray chamber
with recirculated water. The active part of
the chamber is Im #2m #15 m long. Under
the operating conditions, the coefficient
of heat transfer is expected to be 1300
kcal/(hr)(m2)(°C). 200 m3/min of air at 60
°C and 1 atm pressure with a humidity of
0.018 kg water/kg dry air is to be blown
through the spray chamber. Calculate the
following
(a) the temperature and hunudity of the
exit air
(b) make-up water to be supplied, windage
and blow down are neglected
(c) the expected gas-phase mass transfer
coefficient, kya
(d) the temperature and humidity of the
exit air if an identical spray chamber is
added in series with
the existing one
O
find a simple formula fot the nth term of the following sequences
1, -2, 3, -4, 5, -6, ...
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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