The second derivative
[src]
/x\ 4*cos(2*x) x*sin(2*x)
- 4*asin|-|*sin(2*x) + --------------- + --------------
\3/ ________ 3/2
/ 2 / 2\
/ x | x |
3* / 1 - -- 27*|1 - --|
\/ 9 \ 9 /
$$\frac{x \sin{\left(2 x \right)}}{27 \left(1 - \frac{x^{2}}{9}\right)^{\frac{3}{2}}} - 4 \sin{\left(2 x \right)} \operatorname{asin}{\left(\frac{x}{3} \right)} + \frac{4 \cos{\left(2 x \right)}}{3 \sqrt{1 - \frac{x^{2}}{9}}}$$
The third derivative
[src]
/ 2 \
| 3*x |
|-1 + -------|*sin(2*x)
| 2|
/x\ 4*sin(2*x) \ -9 + x / 2*x*cos(2*x)
- 8*asin|-|*cos(2*x) - ------------- - ----------------------- + -------------
\3/ ________ 3/2 3/2
/ 2 / 2\ / 2\
/ x | x | | x |
/ 1 - -- 27*|1 - --| 9*|1 - --|
\/ 9 \ 9 / \ 9 /
$$\frac{2 x \cos{\left(2 x \right)}}{9 \left(1 - \frac{x^{2}}{9}\right)^{\frac{3}{2}}} - 8 \cos{\left(2 x \right)} \operatorname{asin}{\left(\frac{x}{3} \right)} - \frac{4 \sin{\left(2 x \right)}}{\sqrt{1 - \frac{x^{2}}{9}}} - \frac{\left(\frac{3 x^{2}}{x^{2} - 9} - 1\right) \sin{\left(2 x \right)}}{27 \left(1 - \frac{x^{2}}{9}\right)^{\frac{3}{2}}}$$