We read your photo as:

Find the inverse functions and compositions of the given functions f(x) = 16x + 12, g(x) = (3x + 2)/(6), and h(x) = 2x − 2.

Mathematics

ScanSolve AI Answer

Step-by-step solution

12 steps

Here are the solutions for the exercise:

Given functions:
f(x)=16x+12f(x) = 16x + 12
g(x)=3x+26g(x) = \frac{3x + 2}{6}
h(x)=2x−2h(x) = 2x - 2

1. Find f−1(x)f^{-1}(x)

  1. Replace f(x)f(x) with yy.

    y=16x+12y = 16x + 12
  2. Swap xx and yy.

    x=16y+12x = 16y + 12
  3. Solve for yy.

    x−12=16yx - 12 = 16y y=x−1216y = \frac{x - 12}{16}
  4. Replace yy with f−1(x)f^{-1}(x).

    f−1(x)=x−1216\boxed{f^{-1}(x) = \frac{x - 12}{16}}

    2. Find g−1(x)g^{-1}(x)

  5. Replace g(x)g(x) with yy.

    y=3x+26y = \frac{3x + 2}{6}
  6. Swap xx and yy.

    x=3y+26x = \frac{3y + 2}{6}
  7. Solve for yy.

    6x=3y+26x = 3y + 2 6x−2=3y6x - 2 = 3y y=6x−23y = \frac{6x - 2}{3}
  8. Replace yy with g−1(x)g^{-1}(x).

    g−1(x)=6x−23\boxed{g^{-1}(x) = \frac{6x - 2}{3}}

    3. Find h−1(x)h^{-1}(x)

  9. Replace h(x)h(x) with yy.

    y=2x−2y = 2x - 2
  10. Swap xx and yy.

    x=2y−2x = 2y - 2
  11. Solve for yy.

    x+2=2yx + 2 = 2y y=x+22y = \frac{x + 2}{2}
  12. Replace yy with h−1(x)h^{-1}(x).

    h−1(x)=x+22\boxed{h^{-1}(x) = \frac{x + 2}{2}}

    4. Find f∘gf \circ g, g∘hg \circ h, h∘gh \circ g

    • Find f∘g(x)f \circ g(x)

      f∘g(x)=f(g(x))f \circ g(x) = f(g(x)) f(g(x))=16(3x+26)+12f(g(x)) = 16\left(\frac{3x + 2}{6}\right) + 12 f(g(x))=16(3x+2)6+12f(g(x)) = \frac{16(3x + 2)}{6} + 12 f(g(x))=8(3x+2)3+12f(g(x)) = \frac{8(3x + 2)}{3} + 12 f(g(x))=24x+163+363f(g(x)) = \frac{24x + 16}{3} + \frac{36}{3} f(g(x))=24x+16+363f(g(x)) = \frac{24x + 16 + 36}{3} f∘g(x)=24x+523\boxed{f \circ g(x) = \frac{24x + 52}{3}}
    • Find g∘h(x)g \circ h(x)

      g∘h(x)=g(h(x))g \circ h(x) = g(h(x)) g(h(x))=3(2x−2)+26g(h(x)) = \frac{3(2x - 2) + 2}{6} g(h(x))=6x−6+26g(h(x)) = \frac{6x - 6 + 2}{6} g(h(x))=6x−46g(h(x)) = \frac{6x - 4}{6} g(h(x))=2(3x−2)6g(h(x)) = \frac{2(3x - 2)}{6} g∘h(x)=3x−23\boxed{g \circ h(x) = \frac{3x - 2}{3}}
    • Find h∘g(x)h \circ g(x)

      h∘g(x)=h(g(x))h \circ g(x) = h(g(x)) h(g(x))=2(3x+26)−2h(g(x)) = 2\left(\frac{3x + 2}{6}\right) - 2 h(g(x))=2(3x+2)6−2h(g(x)) = \frac{2(3x + 2)}{6} - 2 h(g(x))=3x+23−2h(g(x)) = \frac{3x + 2}{3} - 2 h(g(x))=3x+23−63h(g(x)) = \frac{3x + 2}{3} - \frac{6}{3} h(g(x))=3x+2−63h(g(x)) = \frac{3x + 2 - 6}{3} h∘g(x)=3x−43\boxed{h \circ g(x) = \frac{3x - 4}{3}}

    5. Find f−1(g(x))f^{-1}(g(x)) and h−1(g(x))h^{-1}(g(x))

    • Find f−1(g(x))f^{-1}(g(x)) Substitute g(x)=3x+26g(x) = \frac{3x + 2}{6} into f−1(x)=x−1216f^{-1}(x) = \frac{x - 12}{16}.

      f−1(g(x))=(3x+26)−1216f^{-1}(g(x)) = \frac{\left(\frac{3x + 2}{6}\right) - 12}{16} f−1(g(x))=3x+26−72616f^{-1}(g(x)) = \frac{\frac{3x + 2}{6} - \frac{72}{6}}{16} f−1(g(x))=3x+2−72616f^{-1}(g(x)) = \frac{\frac{3x + 2 - 72}{6}}{16} f−1(g(x))=3x−706×16f^{-1}(g(x)) = \frac{3x - 70}{6 \times 16} f−1(g(x))=3x−7096\boxed{f^{-1}(g(x)) = \frac{3x - 70}{96}}
    • Find h−1(g(x))h^{-1}(g(x)) Substitute g(x)=3x+26g(x) = \frac{3x + 2}{6} into h−1(x)=x+22h^{-1}(x) = \frac{x + 2}{2}.

      h−1(g(x))=(3x+26)+22h^{-1}(g(x)) = \frac{\left(\frac{3x + 2}{6}\right) + 2}{2} h−1(g(x))=3x+26+1262h^{-1}(g(x)) = \frac{\frac{3x + 2}{6} + \frac{12}{6}}{2} h−1(g(x))=3x+2+1262h^{-1}(g(x)) = \frac{\frac{3x + 2 + 12}{6}}{2} h−1(g(x))=3x+146×2h^{-1}(g(x)) = \frac{3x + 14}{6 \times 2} h−1(g(x))=3x+1412\boxed{h^{-1}(g(x)) = \frac{3x + 14}{12}}
Was this helpful?

Still stuck on this one?

Ask a follow-up, and the answer starts from this question.

Got a different question?Ask your own question
Handwritten step-by-step solution preview

Handwritten Step-by-Step Solution

Get this as a handwritten image on WhatsApp — like a tutor wrote it for you.

Try on WhatsApp