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If a prop b^2 and (1+b) prop sqrt© and ...

If a `prop b^2 and (1+b) prop sqrt© and if a=1 , then c=9 and b=5` , then find the value of a with respect of c .

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The correct Answer is:
`a=(4c-4sqrt©+1)/(25)`
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CALCUTTA BOOK HOUSE-VARIATION-EXERCISE
  1. y prop x^2 and y=9 when x =9 . If y =4 then find the value of x .

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  2. Given that A =B +C , where B prop x^2 and C prop x^3 . If x =1 , the...

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  3. If a prop b^2 and (1+b) prop sqrt© and if a=1 , then c=9 and b=5 , t...

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  4. If A varies directly with B and C both , then show that A varies direc...

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  5. If a/b prop (a+b) and b/a prop (a-b) , then show that a^2 -b^2 = const...

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  6. If (x+y) prop z when y is constant and (z+x) prop y when z is cons...

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  7. If x,y,z are variables , but (y+z-x) is a constant and if (x+y-z) prop...

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  8. If x prop (y+z) , y prop (z+x) and z prop(x+y) and if k, l and m are ...

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  9. A variable is the sum of two such quantities one of which varies dire...

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  10. A large sphere is made by melting two gold - spheres of raii r and r r...

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  11. 2 men can cultivate 6 acres of land in 4 days . By using theory of var...

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  12. 15 men can cultivate 18 bighas of land in 5 days. By using theory of v...

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  13. If 5 men can cultivate 10 acres of land in 9 days,then by usnig theory...

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  14. In a fort there was reserved enough food of 2400 soldires for 39 days...

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  15. If 5 men working 6 hours a day can complete a work in 20 days , in how...

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  16. The length of a pendulum varies inversely as the square of the number ...

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  17. If x prop yz^2, y prop ab^2 and zprop b/a , then find how x varies wit...

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  18. if in the variation x =ky and y=k'z, a,b,c and a' ,b',c' be two sets o...

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  19. If ax^2+2hxy+by^2 prop z^2 and (lx+my) prop z where a,b,h,l,m are co...

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  20. If (u^2+v^2) prop (x^2 +y^2 ) and uv prop xy then show that (u+v) pro...

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