Lesson 18 Practice

  1. Domain and Range.

    __ Domain ______ Range

    a) {1,3}___________{3,9}

    b) {1,4}___________{4}

    c) {1,2,3,4}________{3,4,5,6}

    d) {1,2,3,4}________{3,4}

  2. Domain.

    a) Domain:_ -\infty <s<\infty

    Range:_ y\le 1

    b) Domain:_ z\le -2\vee z\ge 2

    Range:_y\ge 0

  3. Pick the Correct Range and Domain.

    Domain:_ (-\infty,\infty) Range:_ [1,\infty)

  4. Some Notation.

    What is the name of the function above? u

    What is its domain? {2,3,4}

    What is its range? {6,7,8}

    Is its range equal to the set {5, 6, 7, 8}? no

  5. Size of the Range.

    ai) {1,5,9}

    aii) 3

    bi) {-3,1}

    bii) 2

  6. Size of Domain Compared with Range.

    sometimes larger than the range

    sometimes equal in size to the range

    never