Suppose that the concentration C in mg/L of medication in a patient's bloodstream is modelled by the function C x , t = 0.2 x e − 0.2 t − e − t , where x is the dosage of the medication in mg and t is the number of hours since the beginning of administration of the medication. (a) Suppose that the medication in the bloodstream reaches an effective level after a half hour. Estimate how much longer the medication remains effective. (b) Suppose the dosage is 100 mg. Estimate the maximum concentration in the bloodstream.
Suppose that the concentration C in mg/L of medication in a patient's bloodstream is modelled by the function C x , t = 0.2 x e − 0.2 t − e − t , where x is the dosage of the medication in mg and t is the number of hours since the beginning of administration of the medication. (a) Suppose that the medication in the bloodstream reaches an effective level after a half hour. Estimate how much longer the medication remains effective. (b) Suppose the dosage is 100 mg. Estimate the maximum concentration in the bloodstream.
Suppose that the concentration C in mg/L of medication in a patient's bloodstream is modelled by the function
C
x
,
t
=
0.2
x
e
−
0.2
t
−
e
−
t
,
where x is the dosage of the medication in mg and t is the number of hours since the beginning of administration of the medication.
(a) Suppose that the medication in the bloodstream reaches an effective level after a half hour. Estimate how much longer the medication remains effective.
(b) Suppose the dosage is 100 mg. Estimate the maximum concentration in the bloodstream.
Find the indefinite integral using the substitution x = 7 sec(0). (Use C for the constant of integration.)
√ ׳ √x² - 49 dx
2
Graph of h
6. The graph of the function h is given in the xy-plane. Which of the following statements is correct?
, the graph of h is increasing at an increasing rate.
(A) For
(B) For
(C) For
苏|4 K|4
π
π
, the graph of h is increasing at a decreasing rate.
2
0 and b>1
(B) a>0 and 01
(D) a<0 and 0
3.
Consider the sequences of functions fn: [-T, π] → R,
sin(n²x)
n(2)
n
(i) Find a function f : [-T, π] R such that fnf pointwise as
n∞. Further, show that f uniformly on [-T,π] as n→ ∞.
[20 Marks]
(ii) Does the sequence of derivatives f(x) has a pointwise limit on [-7,π]?
Justify your answer.
[10 Marks]
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