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y=ln(sqrt(x^2+1)-(2-1)*tgx)

Derivative of y=ln(sqrt(x^2+1)-(2-1)*tgx)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
   /   ________         \
   |  /  2              |
log\\/  x  + 1  - tan(x)/
$$\log{\left(\sqrt{x^{2} + 1} - \tan{\left(x \right)} \right)}$$
Detail solution
  1. Let .

  2. The derivative of is .

  3. Then, apply the chain rule. Multiply by :

    1. Differentiate term by term:

      1. Let .

      2. Apply the power rule: goes to

      3. Then, apply the chain rule. Multiply by :

        1. Differentiate term by term:

          1. Apply the power rule: goes to

          2. The derivative of the constant is zero.

          The result is:

        The result of the chain rule is:

      4. The derivative of a constant times a function is the constant times the derivative of the function.

        1. Rewrite the function to be differentiated:

        2. Apply the quotient rule, which is:

          and .

          To find :

          1. The derivative of sine is cosine:

          To find :

          1. The derivative of cosine is negative sine:

          Now plug in to the quotient rule:

        So, the result is:

      The result is:

    The result of the chain rule is:

  4. Now simplify:


The answer is:

The graph
The first derivative [src]
        2           x     
-1 - tan (x) + -----------
                  ________
                 /  2     
               \/  x  + 1 
--------------------------
      ________            
     /  2                 
   \/  x  + 1  - tan(x)   
$$\frac{\frac{x}{\sqrt{x^{2} + 1}} - \tan^{2}{\left(x \right)} - 1}{\sqrt{x^{2} + 1} - \tan{\left(x \right)}}$$
The second derivative [src]
 /                                                         2                         \ 
 |                              /       2           x     \                          | 
 |                              |1 + tan (x) - -----------|                          | 
 |                              |                 ________|                          | 
 |                      2       |                /      2 |                          | 
 |       1             x        \              \/  1 + x  /      /       2   \       | 
-|- ----------- + ----------- + ---------------------------- + 2*\1 + tan (x)/*tan(x)| 
 |     ________           3/2          ________                                      | 
 |    /      2    /     2\            /      2                                       | 
 \  \/  1 + x     \1 + x /          \/  1 + x   - tan(x)                             / 
---------------------------------------------------------------------------------------
                                     ________                                          
                                    /      2                                           
                                  \/  1 + x   - tan(x)                                 
$$- \frac{\frac{x^{2}}{\left(x^{2} + 1\right)^{\frac{3}{2}}} + 2 \left(\tan^{2}{\left(x \right)} + 1\right) \tan{\left(x \right)} + \frac{\left(- \frac{x}{\sqrt{x^{2} + 1}} + \tan^{2}{\left(x \right)} + 1\right)^{2}}{\sqrt{x^{2} + 1} - \tan{\left(x \right)}} - \frac{1}{\sqrt{x^{2} + 1}}}{\sqrt{x^{2} + 1} - \tan{\left(x \right)}}$$
The third derivative [src]
 /                                                              3                                                                         /                      2                             \\ 
 |                                   /       2           x     \                                              /       2           x     \ |       1             x          /       2   \       || 
 |                                 2*|1 + tan (x) - -----------|                                            3*|1 + tan (x) - -----------|*|- ----------- + ----------- + 2*\1 + tan (x)/*tan(x)|| 
 |                                   |                 ________|                                              |                 ________| |     ________           3/2                         || 
 |               2          3        |                /      2 |                                              |                /      2 | |    /      2    /     2\                            || 
 |  /       2   \        3*x         \              \/  1 + x  /        3*x            2    /       2   \     \              \/  1 + x  / \  \/  1 + x     \1 + x /                            /| 
-|2*\1 + tan (x)/  - ----------- + ------------------------------ + ----------- + 4*tan (x)*\1 + tan (x)/ + ------------------------------------------------------------------------------------| 
 |                           5/2                            2               3/2                                                                ________                                         | 
 |                   /     2\         /   ________         \        /     2\                                                                  /      2                                          | 
 |                   \1 + x /         |  /      2          |        \1 + x /                                                                \/  1 + x   - tan(x)                                | 
 \                                    \\/  1 + x   - tan(x)/                                                                                                                                    / 
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                                          ________                                                                                                
                                                                                         /      2                                                                                                 
                                                                                       \/  1 + x   - tan(x)                                                                                       
$$- \frac{- \frac{3 x^{3}}{\left(x^{2} + 1\right)^{\frac{5}{2}}} + \frac{3 x}{\left(x^{2} + 1\right)^{\frac{3}{2}}} + 2 \left(\tan^{2}{\left(x \right)} + 1\right)^{2} + 4 \left(\tan^{2}{\left(x \right)} + 1\right) \tan^{2}{\left(x \right)} + \frac{3 \left(- \frac{x}{\sqrt{x^{2} + 1}} + \tan^{2}{\left(x \right)} + 1\right) \left(\frac{x^{2}}{\left(x^{2} + 1\right)^{\frac{3}{2}}} + 2 \left(\tan^{2}{\left(x \right)} + 1\right) \tan{\left(x \right)} - \frac{1}{\sqrt{x^{2} + 1}}\right)}{\sqrt{x^{2} + 1} - \tan{\left(x \right)}} + \frac{2 \left(- \frac{x}{\sqrt{x^{2} + 1}} + \tan^{2}{\left(x \right)} + 1\right)^{3}}{\left(\sqrt{x^{2} + 1} - \tan{\left(x \right)}\right)^{2}}}{\sqrt{x^{2} + 1} - \tan{\left(x \right)}}$$
The graph
Derivative of y=ln(sqrt(x^2+1)-(2-1)*tgx)