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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 A Answers

Skills

    1. (a) \(\frac{2}{15}(5x-2)^{\frac{3}{2}}+c\)
    2. (b) \(\frac{3}{16}(4x+3)^{\frac{4}{3}}+c\)
  1. \(-12(3x+1)^{-\frac{1}{3}}+c\)

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

    1. (a) \(\sin^{5}x+c\)
    2. (b) \(-\frac{1}{3}\cos^{3}x+c\)
    1. (a) \(2\ln|x^2+7|+c\)
    2. (b) \(\ln|x^3+2|+c\)
  3. \(4e^{x^2-3}+c\)

  4. \(4\tan(3x-2)+c\)

In context

    1. (a) \(s=-80e^{-0.5t}+80\)
    2. (b) \(s=69.2\) cm
    1. (a) \(N=300\ln(2t+5)+1000-300\ln 5\)
    2. (b) \(N=1480\) bacteria

Stretch

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

  2. \(f(x)=8\ln(2+\sin x)+1.21\)

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