$\int \frac{2x+5}{\sqrt{7-6x-x^2}} \, dx = A \sqrt{7-6x-x^2} + B \sin^{-1}\left(\frac{x+3}{4}\right) + c$ (where $c$ is a constant of integration),then the value of $A+B$ is

If $\int \left( \frac{4 e^x + 6 e^{-x}}{9 e^x - 4 e^{-x}} \right) d x = A x + B \log |9 e^{2 x} - 4| + C$,then $(A, B) = $

If $\int \left( \frac{1-5 \cos^{2}x}{\sin^{5}x \cos^{2}x} \right) dx = f(x) + C$ where $C$ is the constant of integration, then $f(\frac{\pi}{6}) - f(\frac{\pi}{4})$ is equal to

If $\int \sin ^{-1}\left(\sqrt{\frac{x}{1+x}}\right) d x=A(x) \tan ^{-1}(\sqrt{x})+B(x)+C$ where $C$ is a constant of integration,then the ordered pair $(A(x), B(x))$ can be

If $\int(\sin x )^{\frac{-11}{2}}(\cos x )^{\frac{-5}{2}} dx = -\frac{p_1}{q_1}(\cot x)^{\frac{9}{2}}-\frac{p_2}{q_2}(\cot x)^{\frac{5}{2}}-\frac{p_3}{q_3}(\cot x)^{\frac{1}{2}}+\frac{p_4}{q_4}(\cot x)^{\frac{-3}{2}}+C,$ where $p_i$ and $q_i$ are positive integers with $\operatorname{gcd}(p_i, q_i)=1$ for $i =1,2,3,4$ and $C$ is the constant of integration, then $\frac{15 p_1 p_2 p_3 p_4}{q_1 q_2 q_3 q_4}$ is equal to . . . . . . .

If $I_n = \int \tan^n x \, dx$ $(n > 1)$,then $I_4 + I_6 =$