int_{0}^{frac{pi}{2}} ln left(frac{4+3 sin x} | vedclass

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(B) माना $I = \int_{0}^{\frac{\pi}{2}} \ln \left(\frac{4+3 \sin x}{4+3 \cos x}\right) d x$ ..... $(1)$गुणधर्म $\int_{0}^{a} f(x) d x = \int_{0}^{a} f(

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$0$

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(B) माना $I = \int_{0}^{\frac{\pi}{2}} \ln \left(\frac{4+3 \sin x}{4+3 \cos x}\right) d x$ ..... $(1)$गुणधर्म $\int_{0}^{a} f(x) d x = \int_{0}^{a} f(a-x) d x$ का उपयोग करने पर:$I = \int_{0}^{\frac{\pi}{2}} \ln \left(\frac{4+3 \sin(\frac{\pi}{2}-x)}{4+3 \cos(\frac{\pi}{2}-x)}\right) d x$$I = \int_{0}^{\frac{\pi}{2}} \ln \left(\frac{4+3 \cos x}{4+3 \sin x}\right) d x$ ..... $(2)$$(1)$ और $(2)$ को जोड़ने पर:$2I = \int_{0}^{\frac{\pi}{2}} \left[ \ln \left(\frac{4+3 \sin x}{4+3 \cos x}\right) + \ln \left(\frac{4+3 \cos x}{4+3 \sin x}\right) \right] d x$$2I = \int_{0}^{\frac{\pi}{2}} \ln \left( \frac{4+3 \sin x}{4+3 \cos x} \cdot \frac{4+3 \cos x}{4+3 \sin x} \right) d x$$2I = \int_{0}^{\frac{\pi}{2}} \ln(1) d x$चूँकि $\ln(1) = 0$,इसलिए $2I = \int_{0}^{\frac{\pi}{2}} 0 d x = 0$.अतः,$I = 0$.

$\int_{0}^{\frac{\pi}{2}} \ln \left(\frac{4+3 \sin x}{4+3 \cos x}\right) d x$ का मान है

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