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If Deltar =|[2^(r-1) ,2.3^(r-1), 4.5^(r-...

If `Delta_r =|[2^(r-1) ,2.3^(r-1), 4.5^(r-1)],[alpha,beta,gamma],[2^n-1, 3^n-1, 5^n-1]|` , then find the value of `Delta`

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CENGAGE-DETERMINANTS-All Questions
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  2. determinant |"cos theta sin theta -sin theta cos theta

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