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" If " f(x) = |{:(cos(x+alpha),,cos(x+be...

`" If " f(x) = |{:(cos(x+alpha),,cos(x+beta),,cos(x+gamma)),(sin(x+alpha) ,,sin(x+beta),,sin(x+gamma)),(sin(beta-gamma),, sin(gamma-alpha),,sin (alpha-beta)):}|` and
`f(0)=2 ` theb find the value of `Sigma_(r=1)^(30) | f(r )|`.

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Verified by Experts

We have f(x)=0
So f(x) is constant
`:. |f(1)|+|f(2)|+….+|f(30)|=60`
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  9. If f(x)=|[a,-1, 0],[a x, a,-1],[a x^2,a x, a]|,using properties of det...

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  10. If (x)=|[x^2+4x-3 2x+4 13] [2x^2+5x-9 4x+5 26] [ 8x^2-6x+1 16 x-6 10...

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  11. If |y z-x^2z x-y^2x y-z^2x z-y^2x y-z^2y z-x^2x y-z^2y z-x^2z x-y^2|=|...

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  13. If |[ x^n ,x^(n+2) ,x^(2n)],[1 ,x^a , a ],[x^(n+5),x^(a+6),x^(2n+5)]...

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  14. Let x<1, then value of |[x^2+2, 2x+1 ,1],[ 2x+1,x+2, 1],[ 3, 3 ,1]| is...

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  17. If e^(itheta)=costheta+isintheta, find the value of |[1,e^(ipi//3),e...

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  18. Which of the following is not the root of the equation |[x,-6,-1],[ 2,...

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