
Mathematics Grade 11
Authored by Pastor Tegegn
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10th Grade

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14 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
A matrix with all entries 0 is called a zero matrix.
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2.
OPEN ENDED QUESTION
3 mins • 1 pt
A diagonal matrix is a square matrix that has zeros everywhere except along the main diagonal.
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3.
OPEN ENDED QUESTION
3 mins • 1 pt
The identity (unity) matrix is a diagonal matrix where all the elements of diagonal are ones.
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4.
OPEN ENDED QUESTION
3 mins • 1 pt
A scalar matrix is a diagonal matrix where all elements of the diagonal at
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5.
OPEN ENDED QUESTION
3 mins • 1 pt
A lower triangular matrix is a square matrix whose elements above the mi diagonal are all zero.
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6.
OPEN ENDED QUESTION
3 mins • 1 pt
An upper triangular matrix is a square matrix whose elements below the m diagonal are all zero.
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7.
OPEN ENDED QUESTION
3 mins • 1 pt
Let A = (a) and B= (b) be two matrices. Then, A + B = (a + b) and A-B= (ay-by)ma-
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