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Functions inverse

Quiz by Janet Shields

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20 questions
Show answers
  • Q1
    f(x) = 1/x ; x ≠ 0
    f⁻¹(x) = 1/x
    30s
  • Q2
    f(x) = 2x−3
    f⁻¹(x) = ½(x+3)
    30s
  • Q3
    f(x) =x²+9; x≥0
    f⁻¹(x) = √(x−9)
    30s
  • Q4
    f(x) = 6x+5, x∈R
    f⁻¹(x) =1/6 (x−5)
    30s
  • Q5
    f(x) = (x+4)/5, x∈R
    f⁻¹(x) =5x−4
    30s
  • Q6
    f(x) = 4−2x, x∈R
    f⁻¹(x) =½(4−x)
    30s
  • Q7
    f(x) = (2x+7)/3, x∈R
    f⁻¹(x) =½(3x−7)
    30s
  • Q8
    f(x) = 2x³+5, x∈R
    f⁻¹(x) =³√[½(x−5)]
    30s
  • Q9
    f(x) = 5−x, x∈R
    f⁻¹(x) =5−x
    30s
  • Q10
    f(x) = 5/(x−1), x∈R and x≠1
    f⁻¹(x) =5/x +1, x≠0
    30s
  • Q11
    f(x) = (x+2)²+7, x∈R and x≥-2
    f⁻¹(x) =√(x-7) −2, x≥7
    30s
  • Q12
    f(x) = 6/5x, x∈R and x≠0
    f⁻¹(x) = 6/5x, x∈R and x≠0
    30s
  • Q13
    f(x) = (x+5)/(x−1), x∈R and x≠1
    f⁻¹(x) = (x+5)/(x−1), x∈R and x≠1
    30s
  • Q14
    f(x) = x/(x−2), x∈R and x≠2
    f⁻¹(x) = 2x/(x−1), x∈R and x≠1
    30s
  • Q15
    f(x) = (x+2)/(x-5), x∈R and x≠5
    f⁻¹(x) = (5x+2)/(x−1), x∈R and x≠1
    30s

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