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If `Delta_(1)=|(x,b,b),(a,x,b),(a,a,x)|" and "Delta_(2)=|(x,b),(a,x)|`, thenA. `Delta_(1)=3(Delta_(2))^(2)`B. `(d)/(dx)(Delta_(1))=3Delta_(2)`C. `(d)/(dx)(Delta_(1))=3Delta_(2)^(2)`D. `Delta_(1)=3Delta_(2)^(3//2)` |
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Answer» Correct Answer - D `a+ar+ar^(2)+ar^(3)+ar^(4)=40` `(1)/(a)+(1)/(ar)+(1)/(ar^(2))+(1)/(ar^(3))+(1)/(ar^(4))=10implies(1)/(a^(2)r^(4))(a+ar+ar^(2)+ar^(3)+ar^(4))=10impliesa^(2)r^(4)=4impliesar^(2)=pm2` `|S|=|a^(5).r^(10)|=|(pm2)^(5)|` |
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