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y is the sum of two variables, one of wh...

y is the sum of two variables, one of which vaaries directly with the variable x and the other varies inversetly with x, If y = -1 when x = 1 and y = 5 when x = 3, then find the relation between x and y .

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`y = 2x - 3/x`
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CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. Solve : 1/x - 1/(x+b)= 1/a -1/(a+b)[ x ne 0, -b]

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  4. An agricultural co-operative society of village Pachla has purchased a...

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  5. If (a+b-c)/(a+ b) =(b+c-a)/(b+c) = (c+a-b)/(c+a) and a+b+cne 0, then p...

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  6. If x = (4ab)/(a+b), then find the value of (x+2a)/(x-2a) +(x+2b)/(x-...

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  7. State and prove Pythangoras theorem.

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  8. Prove that the opposite angles of a cyclic quadrilateral are suplemena...

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  9. In DeltaABC, /A = 90^@ If CD be a median, then prove that BC^2 = CD^2...

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  10. Construct a circle of radius 2*8 cm. Take a point at a distance of 8 ...

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  11. If the sum of two angles be 135^@ and the difference of them be pi/12...

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  12. If x sin 60^@ cos^@ 30^@ = (tan^2 45^@ sec 60^@)/("cosec 60"^@) then ...

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  13. If tan50^(@) = p/q, then find the value of cos40^@.

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  14. A passenger of an aeroplane observes that Howrah station is at one sid...

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  15. The lengths of shadow of a tower standing on the ground is found to be...

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  16. If 64 water - filled buckets of equal volume are taken out from a cub...

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  17. A right circular cylindrical tank of 9 metre height is filled with wa...

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  18. Calculate how many bullets with lengths of 1 cm radius may be formed b...

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  19. Find the value of(sqrt2+sqrt3)div(sqrt2-sqrt3).

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  20. Find the value of(sqrt5+2)div(sqrt3-1).

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