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Prove the following by vector method. Th...

Prove the following by vector method. The diagonals of a rhombus are at right angles.

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  2. int(pi//6)^(pi//3)dx/(1+sqrtcotx)

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  3. Prove the following by vector method. The diagonals of a rhombus are a...

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  10. Solve dy/dx-y/x=xy^2.

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  11. Let f: X rarr Y If there exists a map g:Y rarr X such that gof = id...

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  14. Prove by vector method that the medians of a triangle are concurrent.

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  15. If l1,m1,n1andl2,m2,n2 are the direction cosines of two mutually perpe...

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  18. Let A={1,2,3}, which of the following functions on A is invertible?

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  19. Let A={1,2,3}, which of the following functions on A is invertible?

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  20. Let A={1,2,3}, which of the following functions on A is invertible?

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