Could anyone help me with solving the following equation, please?
$$ t=\frac{aR^2}{D(C1-C2)}\int_{x1}^{x2}\frac{d\theta}{(1+\cos\theta)^2+[\tan\frac\theta2+8\int_0^\infty \frac{\cosh^2\theta\tau}{\sinh^2\pi\tau}\tanh[\tau(\pi-\theta)]d\tau]}$$
Is it possible to start solving the integration in the denominator using the Trapezoidal rule?, Then solving the total integration of the function. Is that correct as there is variable of $ \theta $ inside the integration in denominator?
Your help is highly appreciated.