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Derivative of ((x^2)+1)/(|x|)

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

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The solution

You have entered [src]
 2    
x  + 1
------
 |x|  
$$\frac{x^{2} + 1}{\left|{x}\right|}$$
(x^2 + 1)/|x|
The first derivative [src]
      / 2    \        
2*x   \x  + 1/*sign(x)
--- - ----------------
|x|           2       
             x        
$$\frac{2 x}{\left|{x}\right|} - \frac{\left(x^{2} + 1\right) \operatorname{sign}{\left(x \right)}}{x^{2}}$$
The second derivative [src]
  /                  /     2\ /  sign(x)                \\
  |                  \1 + x /*|- ------- + DiracDelta(x)||
  | 1    2*sign(x)            \     x                   /|
2*|--- - --------- - ------------------------------------|
  ||x|       x                         2                 |
  \                                   x                  /
$$2 \left(\frac{1}{\left|{x}\right|} - \frac{2 \operatorname{sign}{\left(x \right)}}{x} - \frac{\left(x^{2} + 1\right) \left(\delta\left(x\right) - \frac{\operatorname{sign}{\left(x \right)}}{x}\right)}{x^{2}}\right)$$
The third derivative [src]
   /                              /     2\ /  4*DiracDelta(x)   3*sign(x)                   \\
   |                              \1 + x /*|- --------------- + --------- + DiracDelta(x, 1)||
   |                                       |         x               2                      ||
   |                  3*sign(x)            \                        x                       /|
-2*|6*DiracDelta(x) - --------- + -----------------------------------------------------------|
   \                      x                                    x                             /
----------------------------------------------------------------------------------------------
                                              x                                               
$$- \frac{2 \left(6 \delta\left(x\right) + \frac{\left(x^{2} + 1\right) \left(\delta^{\left( 1 \right)}\left( x \right) - \frac{4 \delta\left(x\right)}{x} + \frac{3 \operatorname{sign}{\left(x \right)}}{x^{2}}\right)}{x} - \frac{3 \operatorname{sign}{\left(x \right)}}{x}\right)}{x}$$