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Larson - Calculus: An Applied Approach 8/e (Homework)

James Finch

Math - College, section 1, Fall 2010

Instructor: Dr. Friendly

Current Score: 16/42

Due: Friday, September 10, 2010 21:00 EDT

Question
Points
1 2 3 4 5 6 7
4 1 0/9 9/13 0/3 0/9 2/3
Total
16/42

Description

Here are some textbook questions from Calculus: An Applied Approach 8/e by Ron Larson published by Brooks/Cole. Click here for a list of all of the questions coded in WebAssign.


Instructions

This demo assignment allows many submissions and allows you to try another version of the same question for practice.



1. 4/4 points All Submissions Notes Question: LarApCalc8 1.1.004.
Question part
Points
Submissions
1 2 3 4
1 1 1 1
1/50 1/50 1/50 1/50
Total
4/4
 
Consider the following points.
(-5, 5), (5, -5)
(a) Plot the points.

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(b) Find the distance between the points.
Enter a number.
Your answer is correct.

(c) Find the midpoint of the line segment joining the points.
(
Enter an exact number.
Your answer is correct.,
Enter an exact number.
Your answer is correct.)

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2. 1/1 points All Submissions Notes Question: LarApCalc8 1.1.026.
Question part
Points
Submissions
1
1
1/50
Total
1/1
 
A guy wire is stretched from a broadcasting tower at a point 200 feet above the ground to an anchor 125 feet from the base (see figure). How long is the wire?
Enter a number.
Your answer is correct. feet

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3. –/9 points Notes Question: LarApCalc8 1.2.024.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/9
 
Consider the given equation.
y = x2 + 6
Sketch the graph of the equation.

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Give the intercepts. (If there is more than one of either intercept, enter the smaller value first. Enter NONE in any unused answer blanks.)
x-intercept = (
Enter a number.
,
Enter a number.
) (smaller x-value)
(
Enter a number.
,
Enter a number.
) (larger x-value)
y-intercept = (
Enter an exact number.
,
Enter an exact number.
) (smaller y-value)
(
Enter a number.
,
Enter a number.
) (larger y-value)

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4. 9/13 points All Submissions Notes Question: LarApCalc8 1.2.048.SBS.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9 10 11 12 13
0/1 0/1 1 1 1 1 1 1 1 0/1 1 1 0/1
0/50 0/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 1/50 2/50 1/50 2/50
Total
9/13
 
Complete the square to write the equation of the circle in standard form. Then graph the circle.
x2 + y212x + 6y + 41 = 0
STEP 1: Group terms, first x and then y.
( ) + ( ) =
Enter a number.
Your answer is correct.

STEP 2: Complete the square.
( x2 - 12x +
Enter a number.
Your answer is correct. ) + (y2 + 6y +
Enter a number.
Your answer is correct. ) =
Enter a number.
Your answer is correct.

STEP 3: Write in standard form by factoring.
( x +
Enter a number.
Your answer is correct. )2 + (y +
Enter a number.
Your answer is correct. )2 =
Enter a number.
Your answer is correct.

STEP 4: Find the center and the radius of the circle.
center = (
Enter a number.
Your answer is incorrect.,
Enter a number.
Your answer is correct. )
radius =
Enter a number.
Your answer is correct.

STEP 5: Graph the circle.

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5. –/3 points Notes Question: LarApCalc8 1.3.068.
Question part
Points
Submissions
1 2 3
0/1 0/1 0/1
0/50 0/50 0/50
Total
0/3
 
Consider the point and line below.
Point: (3, 8)
Line: 6x – 2y = 3

(a) Write the equation for the line through the given point and parallel to the given line.
y =
Enter a mathematical expression or equation with exact values.


(b) Write the equation for the line through the given point and perpendicular to the given line.
y =
Enter a mathematical expression or equation with exact values.


(c) Graph all three equations.

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6. –/9 points Notes Question: LarApCalc8 1.4.014.
Question part
Points
Submissions
1 2 3 4 5 6 7 8 9
0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1 0/1
0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50 0/50
Total
0/9
 
Consider the following function.
f(x) = {(4 x + 3 text( if ) x<0,3-x text( if ) x>=0)

(a) Graph the function.
Maple Generated Plot
Maple Generated Plot
Maple Generated Plot
Maple Generated Plot
(b) Determine the domain and range of the function. (If you need to use or , enter INFINITY or INFINITY, respectively.)
domain:
Enter a number.
,
Enter a number.

range:   
Enter a number.
,
Enter a number.

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7. 2/3 points All Submissions Notes Question: LarApCalc8 1.5.022.
Question part
Points
Submissions
1 2 3
1 0/1 1
1/50 1/50 1/50
Total
2/3
 
Use the graph to find the limit (if it exists). (If you need to use or , enter INFINITY or INFINITY, respectively. If an answer does not exist, enter DNE.)
A = (-1, 0),    B = (-1, 5),    c = -1

(a)  lim_(x->c^+) f(x)
Enter an exact number.
Your answer is correct.

(b)  lim_(x->c^-) f(x)
Enter an exact number.
Your answer is incorrect.

(c)  lim_(x->c) f(x)
Enter a number.
Your answer is correct.

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