workings please?

calculus/precalculus

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  • ?
    Lv 7
    2 months ago

    f(x) = √x    and    g(x) = x⁴ - 9

    (g∘f)(x) = (√x)⁴ - 9 = x² - 9

    domain = (-∞,+∞)  ..........ANS

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              4x+1

    f(x) = --------    and    g(x) = √x

                 7

                     4√x + 1

    (f∘g)(x) = ------------  .............ANS

                          7

    --------------------------

    h(2) = 3, h(5) = 6, p(3) = 4 and p(2) = 5

    (p∘h)(2) = p (h(2)) = p(3) = 4 ............ANS

    --------------------------

  • 2 months ago

    You've asked these separately already, haven't you? I know I answered the first one. And believe I've read at least one of the others too.

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