The spread of a virus is modeled by V (t) = −t3 + t2 + 12t, where V (t) is the number of people (in hundreds) with the virus and t is the number of weeks since the first case was observed. (d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative. (e) Find V (2) and V ′(2). Write a sentence interpreting V (2) and V ′(2) in terms of the number of infected people. Make sure to include units. (f) Sketch the tangent line to the graph you drew in a. at the point (2, V (2)). State the slope of the tangent line.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 94E
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I want the answers to d,e,f,g,h.

The spread of a virus is modeled by
V (t) = −t3 + t2 + 12t,
where V (t) is the number of people (in hundreds) with the virus and t is the number of weeks since
the first case was observed.
(d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative.
(e) Find V (2) and V ′(2). Write a sentence interpreting V (2) and V ′(2) in terms of the number of
infected people. Make sure to include units.
(f) Sketch the tangent line to the graph you drew in a. at the point (2, V (2)). State the slope of the
tangent line.
(g) Use V (2) and V ′(2) to estimate the value of V (2.1).
(h) Find the maximum number of people infected at the same time and when the maximum occurs.
Determine the rate of infection at this time.

 

Math 140
Written Homework 5: 3.2-3.4
Question 1 The spread of a virus is modeled by
Page 1 of 3
V(t) = t³ + t² + 12t,
where V(t) is the number of people (in hundreds) with the virus and t is the number of weeks since
the first case was observed.
(a) Sketch V(t).
(b) What is a reasonable domain of t for this problem?
(c) Find the average rate of infection from t = 0 to t = 2.
(d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative.
(e) Find V(2) and V'(2). Write a sentence interpreting V(2) and V'(2) in terms of the number of
infected people. Make sure to include units.
(f) Sketch the tangent line to the graph you drew in a. at the point (2, V(2)). State the slope of the
tangent line.
(g) Use V(2) and V'(2) to estimate the value of V(2.1).
(h) Find the maximum number of people infected at the same time and when the maximum occurs.
Determine the rate of infection at this time.
Transcribed Image Text:Math 140 Written Homework 5: 3.2-3.4 Question 1 The spread of a virus is modeled by Page 1 of 3 V(t) = t³ + t² + 12t, where V(t) is the number of people (in hundreds) with the virus and t is the number of weeks since the first case was observed. (a) Sketch V(t). (b) What is a reasonable domain of t for this problem? (c) Find the average rate of infection from t = 0 to t = 2. (d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative. (e) Find V(2) and V'(2). Write a sentence interpreting V(2) and V'(2) in terms of the number of infected people. Make sure to include units. (f) Sketch the tangent line to the graph you drew in a. at the point (2, V(2)). State the slope of the tangent line. (g) Use V(2) and V'(2) to estimate the value of V(2.1). (h) Find the maximum number of people infected at the same time and when the maximum occurs. Determine the rate of infection at this time.
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I want the answers to g,h.

The spread of a virus is modeled by
V (t) = −t3 + t2 + 12t,
where V (t) is the number of people (in hundreds) with the virus and t is the number of weeks since
the first case was observed.
(d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative.
(e) Find V (2) and V ′(2). Write a sentence interpreting V (2) and V ′(2) in terms of the number of
infected people. Make sure to include units.
(f) Sketch the tangent line to the graph you drew in a. at the point (2, V (2)). State the slope of the
tangent line.
(g) Use V (2) and V ′(2) to estimate the value of V (2.1).
(h) Find the maximum number of people infected at the same time and when the maximum occurs.
Determine the rate of infection at this time.

Math 140
Written Homework 5: 3.2-3.4
Question 1 The spread of a virus is modeled by
Page 1 of 3
V(t) = t³ + t² + 12t,
where V(t) is the number of people (in hundreds) with the virus and t is the number of weeks since
the first case was observed.
(a) Sketch V(t).
(b) What is a reasonable domain of t for this problem?
(c) Find the average rate of infection from t = 0 to t = 2.
(d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative.
(e) Find V(2) and V'(2). Write a sentence interpreting V(2) and V'(2) in terms of the number of
infected people. Make sure to include units.
(f) Sketch the tangent line to the graph you drew in a. at the point (2, V(2)). State the slope of the
tangent line.
(g) Use V(2) and V'(2) to estimate the value of V(2.1).
(h) Find the maximum number of people infected at the same time and when the maximum occurs.
Determine the rate of infection at this time.
Transcribed Image Text:Math 140 Written Homework 5: 3.2-3.4 Question 1 The spread of a virus is modeled by Page 1 of 3 V(t) = t³ + t² + 12t, where V(t) is the number of people (in hundreds) with the virus and t is the number of weeks since the first case was observed. (a) Sketch V(t). (b) What is a reasonable domain of t for this problem? (c) Find the average rate of infection from t = 0 to t = 2. (d) Find the instantaneous rate of infection as a function of t using the limit definition of the derivative. (e) Find V(2) and V'(2). Write a sentence interpreting V(2) and V'(2) in terms of the number of infected people. Make sure to include units. (f) Sketch the tangent line to the graph you drew in a. at the point (2, V(2)). State the slope of the tangent line. (g) Use V(2) and V'(2) to estimate the value of V(2.1). (h) Find the maximum number of people infected at the same time and when the maximum occurs. Determine the rate of infection at this time.
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