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Derivative of xarccos(x/4)+sqrt(16-x^2)

Function f() - derivative -N order at the point
v

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The solution

You have entered [src]
               _________
      /x\     /       2 
x*acos|-| + \/  16 - x  
      \4/               
$$x \operatorname{acos}{\left(\frac{x}{4} \right)} + \sqrt{16 - x^{2}}$$
x*acos(x/4) + sqrt(16 - x^2)
The graph
The first derivative [src]
       x                x              /x\
- ------------ - --------------- + acos|-|
     _________          ________       \4/
    /       2          /      2           
  \/  16 - x          /      x            
                 4*  /   1 - --           
                   \/        16           
$$- \frac{x}{\sqrt{16 - x^{2}}} - \frac{x}{4 \sqrt{1 - \frac{x^{2}}{16}}} + \operatorname{acos}{\left(\frac{x}{4} \right)}$$
The second derivative [src]
 /                                       2               2      \
 |     1                1               x               x       |
-|------------ + --------------- + ------------ + --------------|
 |   _________          ________            3/2              3/2|
 |  /       2          /      2    /      2\         /     2\   |
 |\/  16 - x          /      x     \16 - x /         |    x |   |
 |               2*  /   1 - --                   64*|1 - --|   |
 \                 \/        16                      \    16/   /
$$- (\frac{x^{2}}{\left(16 - x^{2}\right)^{\frac{3}{2}}} + \frac{x^{2}}{64 \left(1 - \frac{x^{2}}{16}\right)^{\frac{3}{2}}} + \frac{1}{\sqrt{16 - x^{2}}} + \frac{1}{2 \sqrt{1 - \frac{x^{2}}{16}}})$$
The third derivative [src]
   /                                       2                2      \
   |     3               1              3*x              3*x       |
-x*|------------ + -------------- + ------------ + ----------------|
   |         3/2              3/2            5/2                5/2|
   |/      2\         /     2\      /      2\           /     2\   |
   |\16 - x /         |    x |      \16 - x /           |    x |   |
   |               16*|1 - --|                     1024*|1 - --|   |
   \                  \    16/                          \    16/   /
$$- x \left(\frac{3 x^{2}}{\left(16 - x^{2}\right)^{\frac{5}{2}}} + \frac{3 x^{2}}{1024 \left(1 - \frac{x^{2}}{16}\right)^{\frac{5}{2}}} + \frac{3}{\left(16 - x^{2}\right)^{\frac{3}{2}}} + \frac{1}{16 \left(1 - \frac{x^{2}}{16}\right)^{\frac{3}{2}}}\right)$$