Limits & Continuity unit test
A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.
Removable vs jump discontinuity
Recheck the form after each L'Hôpital step
Comparing growth rates
Special trig limits
Intermediate Value Theorem
Why a table cannot prove a limit
Indeterminate forms requiring rewriting
One-sided limits and existence
Continuity of a composition
L'Hôpital's Rule conditions
Three conditions for continuity at a
Squeeze theorem
Short answer 1. Define or explain: Growth hierarchy for limits
3 ptsShort answer 2. Define or explain: Oscillation as a failure mode
3 ptsShort answer 3. Define or explain: Limit at infinity by degree
3 ptsShort answer 4. Define or explain: Repeated application of L'Hôpital
3 ptsFree response
9 ptsThis course has no free-response prompt tagged to this unit, so one from elsewhere in the course is used. It is still worth writing — the skill transfers.
NO CALCULATOR. A particle moves along the x-axis so that its velocity at time t, for 0 ≤ t ≤ 5, is given by v(t) = t² − 6t + 8. At time t = 0 the particle is at position x = 2.
A. Find all intervals of time in 0 ≤ t ≤ 5 during which the particle is moving to the left. Justify your answer.
B. Find the acceleration of the particle at time t = 1. Is the speed of the particle increasing or decreasing at t = 1? Give a reason for your answer.
C. Find the total distance traveled by the particle over the interval 0 ≤ t ≤ 5.
D. Find the position of the particle at time t = 5.