WeBWork Practice and Application 3 — Questions and Answers
Question 1: When a WeBWork problem displays 'INCORRECT' after a submission, what should a student do first?
- Review the problem statement and check for input errors or misread instructions (Correct answer)
- Immediately click 'Show Solution'
- Refresh the page to get a new problem version
- Email the instructor to report a grading error
Correct answer: Review the problem statement and check for input errors or misread instructions
Before assuming a bug or seeking help, students should verify they correctly read and entered the answer.
Question 2: A WeBWork problem asks for a vector answer. The correct vector is (3, -2, 5). How should this be entered?
- <3, -2, 5> (Correct answer)
- (3, -2, 5)
- [3, -2, 5]
- 3i - 2j + 5k
Correct answer: <3, -2, 5>
WeBWork uses angle bracket notation <a, b, c> for vector entry.
Question 3: In WeBWork, if a problem asks for the answer in degrees but you enter the answer in radians, what will happen?
- WeBWork will mark it incorrect because the numerical values differ (Correct answer)
- WeBWork automatically converts between degrees and radians
- WeBWork will accept either form if the value is equivalent
- WeBWork always works in radians regardless of problem setting
Correct answer: WeBWork will mark it incorrect because the numerical values differ
WeBWork checks the numerical value entered; 90° and π/2 rad have different numerical values (90 vs. 1.5708), so entering the wrong unit fails.
Question 4: A WeBWork calculus problem asks for ∫₀¹ x² dx. What is the correct numerical answer?
- 1/3 (Correct answer)
- 1/2
- 1
- 2/3
Correct answer: 1/3
∫₀¹ x² dx = [x³/3]₀¹ = 1/3 - 0 = 1/3.
Question 5: Which WeBWork syntax correctly represents log base 2 of 8?
- log(8)/log(2) (Correct answer)
- log2(8)
- log_2(8)
- ln(8)/ln(2)
Correct answer: log(8)/log(2)
WeBWork does not have a built-in log_base function; use the change-of-base formula log(8)/log(2).
Question 6: A student working on a WeBWork problem notices the 'Attempts Remaining' counter shows 0. What does this mean?
- No more submissions are allowed for that problem (Correct answer)
- The student must start the problem over from scratch
- The grade is automatically set to zero
- The student can still submit but will receive a penalty
Correct answer: No more submissions are allowed for that problem
When attempts reach 0, WeBWork locks the problem and no further submissions are accepted for credit.
Question 7: In a WeBWork problem involving a piecewise function, how do you typically indicate which piece applies when entering the answer?
- You enter the specific formula that applies to the given domain value (Correct answer)
- You enter all pieces separated by semicolons
- You use an 'if-then' statement in WeBWork syntax
- You select the piece from a dropdown menu
Correct answer: You enter the specific formula that applies to the given domain value
WeBWork problems specifying a particular x-value require you to evaluate and enter the result of the applicable piece.
WeBWork Practice and Application 3
When a WeBWork problem displays 'INCORRECT' after a submission, what should a student do first?