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6 is the mean proportional between two n...

6 is the mean proportional between two numbers x ad y and 48 is the third proportional of x and y. Find the numbers.

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UNITED BOOK HOUSE-MISCELLANEOUS EXERCISE-EXERCISE
  1. If (x^2-yz)/a=(y^2-zx)/b=(z^2-xy)/c , show that (a+b+c)(x+y+z)=(ax+by...

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  2. If ax^2+bxy+cy^2 =0 , find x:y.

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  3. 6 is the mean proportional between two numbers x ad y and 48 is the th...

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  4. If (x^3+3xy^2)/(y^3+3x^2y)= 63/62 show that x:y = 3:2.

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  5. If (a+c):(b+c) = (a/b+2):(b/a+2) then show that (a-c):(b-c) = a^2:b^2.

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  6. If (5a-3b)/a= (4a+b-2c)/(a+4b-2c) = (a+2b-3c)/(4a-4c), then show that ...

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  7. If (x+y+z)(y+z-x)(z+x-y)(x+y-z) prop x^2y^2 then show that either x^2+...

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  8. If 1/x-1/y prop 1/(y-x) then show that x/y is constant.

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  9. Simplify: 1/sqrt(11-2sqrt(30))-3/(sqrt7-2sqrt(10))-4/(sqrt(8+4sqrt3))

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  10. Find the square roots of- 8+2sqrt2-2sqrt5-2sqrt(10)

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  11. Find the square roots of- 1+x^2+ sqrt(1+x^2+x^4)

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  12. If 2x = sqrta+1/sqrta. Show that sqrt(x^2-1)/(x-sqrt(x^2-1))(a-1)

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  13. If (x+sqrt(x^2-bc))(y+sqrt(y^2-ca))(z+sqrt(z^2-ab)) = (x-sqrt(x^2-bc...

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  14. If x = (sqrt(a^2+b^2)+sqrt(a^2-b^2))/(sqrt(a^2+b^2)-sqrt(a^2-b^2)) sho...

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  15. If x>y prove that sqrt(y+sqrt(2xy-x^2))+sqrt(y-sqrt(2xy-x^2)) = sqrt(...

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  16. Solve for x, when sqrt(2x^2 + 9) + sqrt(2x^2 - 9) = 9 + 3sqrt7

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  17. Solve: (a+x)^(2//3)+2(a-x)^(2//3) = 3(a^2-x^2)^(1//3)

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  18. Find the area of a sector of a circle with radius 6 cm if angle of the...

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  19. If x prop y+z , y propz+x and z prop x+y, and the constant of variat...

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  20. If x,y,z be variable quantities such that (x+y+z) is constant and (z+x...

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