1.

If Delta_(1)=|(x,b,b),(a,x,b),(a,a,x)|" and "Delta_(2)=|(x,b),(a,x)|, then

Answer»

`Delta_(1)=3(Delta_(2))^(2)`
`(d)/(dx)(Delta_(1))=3Delta_(2)`
`(d)/(dx)(Delta_(1))=3Delta_(2)^(2)`
`Delta_(1)=3Delta_(2)^(3//2)`

Solution :`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)|`


Discussion

No Comment Found

Related InterviewSolutions