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The rate at which the population of a ci...

The rate at which the population of a city increases varies as the population.
In a perid of 40 years,the population increases from 4 lakhs to 6 lakhs.
Show that in another 20 years,the population will be 7.348 lakhs`(sqrt 3/sqrt 2=1.2247)`

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CHETANA PUBLICATION-DIFFERENTIAL EQUATIONS-EXERCISE
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  2. Find the equation of the curve passing through the point(0,2) given th...

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  5. Bacteria multiply at the rate proportional to the number of bacteria p...

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  6. An ice ball melts at the rate proportional to the amount of ice at any...

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  7. The rate of decay of the mass of a radioactive substance at any time i...

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  8. Bacteria grow at rate proportional to the number of bacteria present i...

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  9. The order and degree of differential equation sqrt((1+(dy/dx)^2)=((d^2...

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  10. The differential equation of y=c^2+c/x is

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  11. x^2+y^2=a^2 is a solution of

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  12. The differential equation of all circles having their centre on the y=...

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  13. The differential equation y dy/dx+x=0 represents family of……..

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  14. The solution of 1/x dy/dx=tan^(-1)x is……….

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  15. The solution of (x+y)^2 dy/dx=1 is…………

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  16. The solution of dy/dx=(y+sqrt(x^2-y^2))/x is

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  17. The solution of dy/dx+y=cos x-sin x is

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  18. The integrating factor of linear differential equation x dy/dx+2y=x^2 ...

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  19. The solution of the differential equation dy/dx=sec x-y tan x is

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  20. The particular solution of dy/dx=xe^(y-x) when y=0, x=0 is

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