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By Matrix inverse method, solve 3x+4y+5z...

By Matrix inverse method, solve `3x+4y+5z = 18, 2x-y+8z=13, 5x-2y+7z = 20`.

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Solve the following system of equations by using Cramer,s ruel . 3x+4y+5z=18,2x-y+8z=13,5x-2y+7z=20

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SRISIRI PUBLICATION-QUESTION PAPER -Section C
  1. If A = [(cos theta, sin theta),(-sin theta, cos theta)] then show that...

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  2. By Cramer's rule, solve x-y+3z = 5, 4x+2y-z = 0, x+3y+z = 5.

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  3. By Matrix inverse method, solve 3x+4y+5z = 18, 2x-y+8z=13, 5x-2y+7z = ...

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  4. By Matrix inverse method, solve 3x+4y+5z = 18, 2x-y+8z=13, 5x-2y+7z = ...

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  5. Solve the system of equations x+y+z=3,2x+2y-z=3,x+y-z=1 by Gauss Jorda...

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  6. Examine the consistency of the following systems of equations x+y+z=1...

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  7. P.T the smaller angle theta between any two diagonals of a cube is giv...

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  8. If bar(a)=bar(i)-2bar(j)+3bar(k),bar(b)=2bar(i)+bar(j)+bar(k), bar(c)=...

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  9. If bar(a) = 2bar(i) + 3bar(j) + 4bar(k), bar(b) = bar(i) + bar(j) -bar...

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  10. Find the shortest distance between the skew lines . bar(r)=(6bar(i)...

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  11. If A=(1,-2,-1) , B=(4,0,-3),C= (1,2,-1),D=(2,-4,-5) then find distan...

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  12. If A+B+C= 180^(@), then show that sin 2A+ sin 2B+ sin 2C =4 sin A sin...

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  13. IF A,B,C are angles in the triangle, then prove that cosA+cosB-cosC=...

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  14. If A, B , C are angles in a triangle, then the sin ^(2)A+sin ^(2)B - s...

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  15. If A+B+ C =pi, then prove that cos ^(2) (A/2)+ cos ^(2) (B/2) +cos ^(2...

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  16. If A, B , C are angles of a triangle, then P. T sin ^(2) . (A)/(2)+ si...

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  17. In triangle ABC, prove that cos .(A)/(2)+cos.(B)/(2)+cos. (C)/(2) =4 c...

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  18. If A+B+C=(3pi)/(2), prove that cos 2A+ cos 2B+ cos 2C=1-4 sin A sin B ...

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  19. If A+B+C = 2S , then P.T cos(S-A)+cos(S-B)+cos(S-C)+cosS=4cos.(A)/(...

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  20. In a /\ABC if a = 13,b=14,c=15 then S.T R = (65)/8 , r=4, r(1) = (21)/...

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