Analyze the given polynomial function by following steps. Step 1: Determine the end behavior of the graph of the function. Step 2: Find the x − and y − intercepts of the graph of the function. Step 3: Determine the zeros of the function and their multiplicity. Use this information to determine whether the graph crosses or touches the x − axis at each x − intercept. Step 4: Determine the maximum number of turning points on the graph of the function. Step 5: Use the information in steps 1 through 4 to draw a complete graph of the function. To help establish the y − axis scale, find additional points on the graph on each side of any x − intercept. f ( x ) = ( 3 − x ) ( 2 + x ) ( x + 1 )
Analyze the given polynomial function by following steps. Step 1: Determine the end behavior of the graph of the function. Step 2: Find the x − and y − intercepts of the graph of the function. Step 3: Determine the zeros of the function and their multiplicity. Use this information to determine whether the graph crosses or touches the x − axis at each x − intercept. Step 4: Determine the maximum number of turning points on the graph of the function. Step 5: Use the information in steps 1 through 4 to draw a complete graph of the function. To help establish the y − axis scale, find additional points on the graph on each side of any x − intercept. f ( x ) = ( 3 − x ) ( 2 + x ) ( x + 1 )
Solution Summary: The author explains how the graph of the function f(x) crosses at each x- intercept.
Analyze the given polynomial function by following steps.
Step 1: Determine the end behavior of the graph of the function.
Step 2: Find the
x
−
and
y
−
intercepts of the graph of the function.
Step 3: Determine the zeros of the function and their multiplicity. Use this information to determine whether the graph crosses or touches the
x
−
axis at each
x
−
intercept.
Step 4: Determine the maximum number of turning points on the graph of the function.
Step 5: Use the information in steps 1 through 4 to draw a complete graph of the function. To help establish the
y
−
axis scale, find additional points on the graph on each side of any
x
−
intercept.
There are three options for investing $1150. The first earns 10% compounded annually, the second earns 10% compounded quarterly, and the third earns 10% compounded continuously. Find equations that model each investment growth and
use a graphing utility to graph each model in the same viewing window over a 20-year period. Use the graph to determine which investment yields the highest return after 20 years. What are the differences in earnings among the three
investment?
STEP 1: The formula for compound interest is
A =
nt
= P(1 + − − ) n²,
where n is the number of compoundings per year, t is the number of years, r is the interest rate, P is the principal, and A is the amount (balance) after t years. For continuous compounding, the formula reduces to
A = Pert
Find r and n for each model, and use these values to write A in terms of t for each case.
Annual Model
r=0.10
A = Y(t) = 1150 (1.10)*
n = 1
Quarterly Model
r = 0.10
n = 4
A = Q(t) = 1150(1.025) 4t
Continuous Model
r=0.10
A = C(t) =…
Use a graphing utility to find the point of intersection, if any, of the graphs of the functions. Round your result to three decimal places. (Enter NONE in any unused answer blanks.)
y = 100e0.01x
(x, y) =
y = 11,250
×
5. For the function y-x³-3x²-1, use
derivatives to:
(a) determine the intervals of increase and
decrease.
(b) determine the local (relative) maxima and
minima.
(e) determine the intervals of concavity.
(d) determine the points of inflection.
(e) sketch the graph with the above information
indicated on the graph.
Chapter 3 Solutions
Pearson eText for Precalculus: Concepts Through Functions, A Right Triangle Approach to Trigonometry -- Instant Access (Pearson+)
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.