3*sinh(3*x) 3*cosh(3*x)*tan(3*x)
2*x + ----------- - --------------------
sec(3*x) sec(3*x)
$$2 x - \frac{3 \tan{\left(3 x \right)} \cosh{\left(3 x \right)}}{\sec{\left(3 x \right)}} + \frac{3 \sinh{\left(3 x \right)}}{\sec{\left(3 x \right)}}$$
/ 2 \ 2
9*cosh(3*x) 18*sinh(3*x)*tan(3*x) 9*\1 + tan (3*x)/*cosh(3*x) 9*tan (3*x)*cosh(3*x)
2 + ----------- - --------------------- - --------------------------- + ---------------------
sec(3*x) sec(3*x) sec(3*x) sec(3*x)
$$- \frac{9 \left(\tan^{2}{\left(3 x \right)} + 1\right) \cosh{\left(3 x \right)}}{\sec{\left(3 x \right)}} + \frac{9 \tan^{2}{\left(3 x \right)} \cosh{\left(3 x \right)}}{\sec{\left(3 x \right)}} - \frac{18 \tan{\left(3 x \right)} \sinh{\left(3 x \right)}}{\sec{\left(3 x \right)}} + \frac{9 \cosh{\left(3 x \right)}}{\sec{\left(3 x \right)}} + 2$$
/ 3 / 2 \ 2 / 2 \ \
27*\- tan (3*x)*cosh(3*x) - 3*\1 + tan (3*x)/*sinh(3*x) - 3*cosh(3*x)*tan(3*x) + 3*tan (3*x)*sinh(3*x) + \1 + tan (3*x)/*cosh(3*x)*tan(3*x) + sinh(3*x)/
--------------------------------------------------------------------------------------------------------------------------------------------------------
sec(3*x)
$$\frac{27 \left(\left(\tan^{2}{\left(3 x \right)} + 1\right) \tan{\left(3 x \right)} \cosh{\left(3 x \right)} - 3 \left(\tan^{2}{\left(3 x \right)} + 1\right) \sinh{\left(3 x \right)} - \tan^{3}{\left(3 x \right)} \cosh{\left(3 x \right)} + 3 \tan^{2}{\left(3 x \right)} \sinh{\left(3 x \right)} - 3 \tan{\left(3 x \right)} \cosh{\left(3 x \right)} + \sinh{\left(3 x \right)}\right)}{\sec{\left(3 x \right)}}$$