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  • Perplex
    IB Math AIHL
    /
    Matrices
    /

    Problems

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    Problem Bank - Matrices

    Access custom-built, exam-style problems for matrices. Each problem has a full solution and mark-scheme, as well as AI grading and support.

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    16 / 59 problems visible - Upgrade to view all problems

    IB: 5
    10

    !

    0 / 8

    In a coastal town, each day is classified as dry (state A) or wet (state B).

    Historical records show:

    • If a day is dry, the next day stays dry with probability 0.4.

    • If a day is wet, the next day stays wet with probability 0.5.

    1. Determine the transition matrix M for the daily weather in the town.

      [2]
    2. Find the eigenvalues of M.

      [4]
    3. Find an eigenvector corresponding to the greater of the two eigenvalues, giving your answer in the form (ab​), a,b∈Z.

      [2]
    11

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    Consider the two matrices

    A=(20​32​),B=(k0​54​).

    We say A and B commute if AB=BA.

    1. Find the value of k for which A and B commute.

      [3]
    2. Substituting in the value from (a), state the product AB=BA.

      [1]
    12

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    Matrices A and B are defined as

    A=(3x2​−y5​),B=(7p​4q​)

    and it is known that

    A+2B=(1716​1513​)
    1. Find the values of x and y.

      [3]
    2. Find the values of p and q.

      [4]
    13

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