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Find x+y+z

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Find lambda and mu so that the simultaneous equations x+y+z= 6, x + 2y + 3z = 10, x + 2y + lambda z = mu have infinite number of solutions.

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Knowledge Check

  • Find x, y and z if vectors xhati-2hatj+zhatk=2hati-yhatj+hatk

    A
    `2, 1, 2`
    B
    `1, 2, 2`
    C
    `1, 1, 2`
    D
    `2, 2, 1`

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