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If determinant |[cos(theta+phi),-sin(the...

If determinant `|[cos(theta+phi),-sin(theta+phi),cos2phi],[sin theta,costheta, sinphi],[-costheta,sintheta,cosphi]|` is a. positive b. independent of `theta` c. independent of `phi` d. none of these

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CENGAGE PUBLICATION-DETERMINANTS-All Questions
  1. The system of equations -2x+y+z=a, x-2y+z=b, x+y-2z=c, has: (a)no so...

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  2. Show that if x1, x2, x3!=0 abs((x1+a1.b1,a1.b2,a1.b3),(a2.b1,x2+a2.b...

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  3. If determinant |[cos(theta+phi),-sin(theta+phi),cos2phi],[sin theta,co...

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  4. If Deltar =|[2^(r-1) ,2.3^(r-1), 4.5^(r-1)],[alpha,beta,gamma],[2^n-1,...

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  5. The values of k in R for which the system of equations x+k y+3z=0,k x...

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  6. A determinant of second order is made with the elements 0 and 1. Fi...

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  7. If a ,b , c are nonzero real numbers such that |[b c,c a, a b],[ c a, ...

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  8. Prove that the determinant |[x, sintheta,costheta],[-sintheta,-x,1],[...

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  9. Consider the determinant f(x)=|[0,x^2-a, x^3-b], [x^2+a,0,x^2+c], [x^4...

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  10. Find the value of |[1, 2, 4],[-1,3, 0],[4 ,1, 0]|

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  11. Consider the system of the equation k x+y+z=1,x+k y+z=k ,a n dx+y+k z=...

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  12. If x+y+z=0 prove that |[a x, b y, c z],[ c y, a z ,b x],[ b z ,c x ,a ...

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  13. Each question has four choices a, b, c and d, out of which only one is...

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  14. If a ,b ,c in R , then find the number of real roots of the equat...

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  15. Delta = |(a, a^2, 0),(1, 2a+b,(a+b)),(0, 1, 2a+3b)| is divisible by ...

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  16. Without expanding at any stage, prove that the value of each of the...

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  17. If a,b c(all positive)are the p th,q thand r th terms repectively of a...

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  18. If the entries in a 3xx3 determinant are either 0 or 1, then the grea...

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  19. The value of the determinant of n^(t h) order, being given by |[x, 1, ...

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  20. Prove that a!=0,|[x+a, x,x],[x,x+a,x],[x,x,x+a^2]|=0 represents a stra...

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