फलन का समाकलन कीजिए: $\frac{1}{x \sqrt{ax - x^{2}}} \quad \left[ \text{संकेत: } x = \frac{a}{t} \right]$

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माना $I = \int \frac{1}{x \sqrt{ax - x^{2}}} dx$.
$x = \frac{a}{t}$ प्रतिस्थापित करने पर,$dx = -\frac{a}{t^{2}} dt$ प्राप्त होता है।
इन मानों को समाकल में रखने पर:
$I = \int \frac{1}{\frac{a}{t} \sqrt{a \cdot \frac{a}{t} - \left(\frac{a}{t}\right)^{2}}} \left(-\frac{a}{t^{2}} dt\right)$
$I = \int \frac{1}{\frac{a}{t} \sqrt{\frac{a^{2}}{t} - \frac{a^{2}}{t^{2}}}} \left(-\frac{a}{t^{2}} dt\right)$
$I = \int \frac{1}{\frac{a}{t} \cdot \frac{a}{t} \sqrt{t - 1}} \left(-\frac{a}{t^{2}} dt\right)$
$I = -\int \frac{1}{\sqrt{t - 1}} dt$
$I = -2 \sqrt{t - 1} + C$
$t = \frac{a}{x}$ वापस रखने पर:
$I = -2 \sqrt{\frac{a}{x} - 1} + C = -2 \sqrt{\frac{a - x}{x}} + C$.

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