Question 1180576
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if A is the n*n matrix whose {{{highlight(diagonal)}}} elements are all "a" 
and whose off diagonal elements are all "b" where a and b are any two real numbers, find the value of |A|
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<pre>
Determinant | A | is equal to


    | A | = {{{ ( a + (n-1)b ) * (a-b)^(n-1)}}}.      <U>ANSWER</U>
</pre>


Which problem book or textbook do you use in your study of Algebra / linear algebra / (determinants) ?