WeBWork Practice and Application 3

Question 1

When a WeBWork problem displays 'INCORRECT' after a submission, what should a student do first?

Accepted Answer

Review the problem statement and check for input errors or misread instructions

Answer

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?

Accepted Answer

<3, -2, 5>

Answer

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?

Accepted Answer

WeBWork will mark it incorrect because the numerical values differ

Answer

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?

Accepted Answer

1/3

Answer

∫₀¹ x² dx = [x³/3]₀¹ = 1/3 - 0 = 1/3.

Question 5

Which WeBWork syntax correctly represents log base 2 of 8?

Accepted Answer

log(8)/log(2)

Answer

WeBWork does not have a built-in log_base function; use the change-of-base formula log(8)/log(2).

WeBWork Practice Test