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Suppose a in R. Let f(x)=|(x+a,x,x),(x,x...

Suppose `a in R.` Let `f(x)=|(x+a,x,x),(x,x+a,x),(x,x,x+a)|`then `f(2 x)-f(x)` is equal to

A

`3xa^(2)`

B

`3x^(2)a`

C

`xa^(2)`

D

`a^(2)x`

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A
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  8. If alpha,beta,gamma are real numbers, then determinant Delta=|(sin^2 a...

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  9. If bc+ca+ab=18 and |(1,a^(2),a^(3)),(1,b^(2),b^(3)),(1,c^(2),c^(3))...

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  11. If x epsilon R the determinant Delta=|(1,cosx,0),(-1,1-cosx,sinx+cos...

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  17. The determinant Delta=|(1,1+i,i),(1+i,i,1),(i,1,1+i)| equals

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