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IB Mathematics: Applications and Interpretation HL · AHL 7: Markov Chains & Transition Matrices · AHL 7.2
Powers of the transition matrix and state vectors Problem set A Answers
Skills
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- (a) 0.568
- (b) 0.610
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0.336
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- (a) 0.413
- (b) 0.238
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\(\begin{pmatrix} 0.593 \\ 0.407 \end{pmatrix}\)
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\(\begin{pmatrix} 0.272 \\ 0.359 \\ 0.369 \end{pmatrix}\)
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- (a) Regular. The smallest power is 2.
- (b) Not regular. The first and third states are absorbing, so zeros stay in every power.
- (c) Not regular. The chain goes round state 1, 2, 3, 1, … and \(\mathbf{T}^3\) is the identity matrix, so every power has zeros.
In context
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Atlas 32.9%, Bolt 42.9%, Core 24.3%
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0.242
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morning 873, evening 327
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- (a) 0.096
- (b) 0.312
Stretch
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n = 7
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- (a) 0.2952
- (b) \(\mathbf{T}^2\) entry in column A, row C is 0.2952
jmaths.xyz · AI HL · AHL 7.2 Powers of the transition matrix and initial state vectors