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IB Mathematics: Applications and Interpretation HL · AHL 3: Further Integration · AHL 3.2

Integrating f(ax+b) and by inspection Problem set B Answers

Skills

    1. (a) \(\frac{2}{9}(3x+7)^{\frac{3}{2}}+c\)
    2. (b) \(\frac{3}{8}(2x-5)^{\frac{4}{3}}+c\)
  1. \(-4(5x-2)^{-\frac{1}{2}}+c\)

    1. (a) \(\frac{1}{6}\sin(6x+2)+c\)
    2. (b) \(2\sin(4x-5)+c\)
    1. (a) \(-\frac{1}{5}\cos(5x-1)+c\)
    2. (b) \(3\cos(2-3x)+c\)
    1. (a) \(2e^{3x-2}+c\)
    2. (b) \(-4e^{4-3x}+c\)
    1. (a) \(2\ln|5x-1|+c\)
    2. (b) \(-2\ln|3-4x|+c\)
  2. \(\frac{5}{4}(x^2+4)^{4}+c\)

    1. (a) \(2\sin^{3}x+c\)
    2. (b) \(-\frac{1}{6}\cos^{6}x+c\)
    1. (a) \(3\ln|x^2+2|+c\)
    2. (b) \(\ln|x^4+9|+c\)
  3. \(3e^{x^3+2}+c\)

  4. \(3\tan(5x+1)+c\)

In context

    1. (a) \(V=-100e^{-0.3t}+100\)
    2. (b) \(V=83.5\) litres
    1. (a) \(V=150\ln(3t+2)+500-150\ln 2\)
    2. (b) \(V=885\) visitors

Stretch

  1. \(\frac{4}{3}(x^3+1)^{\frac{3}{2}}+c\)

  2. \(f(x)=6\ln(3-\cos x)-3.32\)

jmaths.xyz · AI HL · AHL 3.2 Integrating f(ax+b) and by inspection