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AP CALCULUS TEST REVIEW 1.4-1.5 lim f (x) lim f (x) x→ 4 + x→−1+ 1. Use the graph to find lim− f (x) . 2. Use the graph to find lim− f (x) . x→ 4 x→−1 lim f (x) lim f (x) x→ 4 x→−1 10 10 9 9 8 8 7 7 6 5 Y Axis Y Axis 6 4 5 4 3 3 2 2 1 0 1 0 1 2 3 4 5 6 7 8 9 10 0 -5 X Axis -4 -3 -2 -1 0 1 2 3 X Axis 3-4. Use the graphs from #1-2 to identify values of x where the functions would be discontinuous. Classify these discontinuities as removable or non-removable. ! ! ! ! ! ! Find the value(s) of x (if any) for which the function is discontinuous and classify these discontinuities as removable or nonremovable. 5. 7. ! ! ! f (x) = x+2 x − 3x − 10 6. f (x) = cos 2 ⎧−2x + 3, f (x) = ⎨ 2 ⎩x , x <1 x ≥1 πx 2 4 5 ! Find the limit of each of the following analytically, if possible. If the limit does not exist, explain how you reached that conclusion. ! x −1 2+x lim+ lim+ 8. x→1 x − 1 9. x→1 1 − x πx . Find each limit (if it exists). 4 lim f (x) lim f (x) a) x→−2+ b) x→−2− 10. Let f (x) = sec ⎧−2x, 11. Let f (x) = ⎨ 2 ⎩ x − 4x + 1, lim f (x) a) x→2+ x≤2 x>2 c) lim f (x) x→2 . Find each limit (if it exists). b) lim f (x) x→2 − c) lim f (x) x→2 ! 12. Find all vertical asymptotes of f (x) = 1 . sin(2x) 13. Find all vertical asymptotes of f (x) = x3 + 1 . x +1 14. Verify that the Intermediate Value Theorem applies to the indicated interval and the value of c guaranteed by the theorem. f (x) = x 2 + x − 1, [0, 5], f (c) = 11 Know the intermediate value theorem and how it applies to continuity. Also be able to graph a function with given characteristics ! (vertical asymptotes, discontinuities, etc.)