यदि $\int \frac{5 \tan x}{\tan x-2} d x=x+a \log |\sin x-2 \cos x|+c$ है,तो $a$ का मान ज्ञात कीजिए (जहाँ $c$ समाकलन का स्थिरांक है)।

  • A
    $1$
  • B
    $-2$
  • C
    $-1$
  • D
    $2$

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मान लीजिए $I(x)=\int\frac{3dx}{(4x+6)(\sqrt{4x^{2}+8x+3})}$ और $I(0)=\frac{\sqrt{3}}{4}+20$ है। यदि $I(\frac{1}{2})=\frac{a\sqrt{2}}{b}+c$, जहाँ $a, b, c \in N$ और $gcd(a,b)=1$, तो $a+b+c$ का मान ज्ञात कीजिए:

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