Integral of $$$\cos{\left(2 x \right)} - \cos{\left(\tanh{\left(\eta \right)} \right)} - \frac{\cos{\left(2 \right)} \tanh{\left(\eta \right)}}{\cos{\left(x \right)}}$$$ with respect to $$$x$$$
The calculator will find the integral/antiderivative of $$$\cos{\left(2 x \right)} - \cos{\left(\tanh{\left(\eta \right)} \right)} - \frac{\cos{\left(2 \right)} \tanh{\left(\eta \right)}}{\cos{\left(x \right)}}$$$ with respect to $$$x$$$, with steps shown.
Related calculator: Definite and Improper Integral Calculator
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Find $$$\int \left(\cos{\left(2 x \right)} - \cos{\left(\tanh{\left(\eta \right)} \right)} - \frac{\cos{\left(2 \right)} \tanh{\left(\eta \right)}}{\cos{\left(x \right)}}\right)\, dx$$$.
The trigonometric functions expect the argument in radians. To enter the argument in degrees, multiply it by pi/180, e.g. write 45° as 45*pi/180, or use the appropriate function adding 'd', e.g. write sin(45°) as sind(45).