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Softa [21]
2 years ago
12

In 2000 the population of country a reached 4 million, and in 2025-is projected to be 7.5 million.

Mathematics
1 answer:
Alika [10]2 years ago
3 0

Answer:

the answer is 2000 so yea

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Step-by-step explanation:

Integration Rule:

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Given differential equation is

x^2 \frac{dw}{dx}= \sqrt{w}(2x+5)

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\Rightarrow \frac{dw}{\sqrt w}= \frac{(2x+5)}{x^2} dx                [ dividing x^2\sqrt w both sides]

Integrating both sides

\int \frac{dw}{\sqrt w}=\int \frac{(2x+5)}{x^2} dx

\Rightarrow \int w^{-\frac12} dw=\int (\frac{2x}{x^2}+\frac{5}{x^2} )dx

\Rightarrow \int w^{-\frac12} dw=\int \frac{2}{x}dx +\int\frac{5}{x^2} dx

\Rightarrow \frac{w^{-\frac12+1}}{-\frac12+1} =2ln x+5 \frac{x^{-2+1}}{-2+1}+c   [ c is arbitrary constant]

\Rightarrow 2 \sqrt w = 2 ln(x) - 5 \frac1x +c

Therefore the general solution is

2 \sqrt w = 2 ln(x) - 5 \frac1x +c

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