વિધેયનું સંકલન કરો: $\sqrt{1+\frac{x^{2}}{9}}$

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ધારો કે $I = \int \sqrt{1+\frac{x^{2}}{9}} \, dx$.
આપણે સંકલ્યને આ રીતે ફરીથી લખી શકીએ:
$I = \int \sqrt{\frac{9+x^{2}}{9}} \, dx = \frac{1}{3} \int \sqrt{9+x^{2}} \, dx = \frac{1}{3} \int \sqrt{3^{2}+x^{2}} \, dx$.
પ્રમાણિત સંકલન સૂત્ર $\int \sqrt{x^{2}+a^{2}} \, dx = \frac{x}{2} \sqrt{x^{2}+a^{2}} + \frac{a^{2}}{2} \ln |x + \sqrt{x^{2}+a^{2}}| + C$ નો ઉપયોગ કરતા,જ્યાં $a = 3$:
$I = \frac{1}{3} \left[ \frac{x}{2} \sqrt{x^{2}+3^{2}} + \frac{3^{2}}{2} \ln |x + \sqrt{x^{2}+3^{2}}| \right] + C$.
$I = \frac{1}{3} \left[ \frac{x}{2} \sqrt{x^{2}+9} + \frac{9}{2} \ln |x + \sqrt{x^{2}+9}| \right] + C$.
$I = \frac{x}{6} \sqrt{x^{2}+9} + \frac{3}{2} \ln |x + \sqrt{x^{2}+9}| + C$,જ્યાં $C$ એ સ્વૈચ્છિક અચળાંક છે.

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