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12th grade Inverse function rule and inverse trig derivatives worksheet

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Inverse function rule and inverse trig derivatives

Grade 12 Math Worksheet - Challenge Me

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Circle the best answer, or write your answer on the line.

  1. f(x) = x + eˣ is always increasing, so it has an inverse g. Ari finds g′(1). What is it?

  2. f(x) = x³ + 4x − 2 is always increasing, so it has an inverse g. Esme finds g′(3). What is it?

  3. f(x) = x³ + 2x is always increasing, so it has an inverse g. Jun finds g′(-3). What is it?

  4. A camera 300 m from a launch pad tracks a rocket rising 250 m/s, at angle θ = arctan(h/300). Kira finds dθ/dt at h = 400. What is it, in radians per second?

  5. A sensor 30 m from a pole tracks a kite climbing it at 10 m/s, at angle θ = arctan(h/30). Luz finds dθ/dt at h = 40. What is it, in radians per second?

  6. A lamp 8 m from a wall lights a balloon rising 3 m/s, at angle θ = arctan(h/8). Noah finds dθ/dt at h = 6. What is it, in radians per second?

  7. Pia wants the exact slope of f(x) = arcsin x at x = 1/2. What is f′(1/2)?

    • f′(1/2) = √2
    • f′(1/2) = −2√3/3
    • f′(1/2) = 4/3
    • f′(1/2) = 2√3/3
  8. Ren wants the exact slope of f(x) = arccos x at x = √3/2. What is f′(√3/2)?

    • f′(√3/2) = −2
    • f′(√3/2) = 2
    • f′(√3/2) = −(√3 + 1)
    • f′(√3/2) = −4
  9. Tala wants the exact slope of f(x) = arcsin x at x = √2/2. What is f′(√2/2)?

    • f′(√2/2) = 2
    • f′(√2/2) = √(2 + √2)
    • f′(√2/2) = √2
    • f′(√2/2) = −√2
  10. Zee wants the exact slope of f(x) = arccos x at x = 1/2. What is f′(1/2)?

    • f′(1/2) = −2√3/3
    • f′(1/2) = −4/3
    • f′(1/2) = 2√3/3
    • f′(1/2) = −√2
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12th grade Inverse function rule and inverse trig derivatives worksheet – printable
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About this worksheet

Inverse function and inverse trig derivatives. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can find the slope of an inverse from a table or a formula.
  • I can differentiate arcsin, arccos and arctan, also with the chain rule.
  • I can find a rate of change of an angle and an exact inverse trig slope.

Standard: none (beyond CCSS)

Words to know

inverse g: The function that undoes f: g(f(x)) = x.

g′(b) = 1/f′(a): The inverse's slope at b, where f(a) = b.

arctan: The angle whose tangent is x.

Common mistakes

Gave f′(a) instead of its reciprocal. Mirroring a graph in y = x flips rise and run, so g′(b) = 1/f′(a).

Read f′ at b instead of at a, the x where f(a) = b.

Used the wrong sign. Only arccos has a negative derivative; arcsin and arctan rise.

Questions parents ask

What is the most common mistake with inverse function rule and inverse trig derivatives?

Gave f′(a) instead of its reciprocal. Mirroring a graph in y = x flips rise and run, so g′(b) = 1/f′(a).

Are these 12th grade math worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

More calculus

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