Mister Exam

Other calculators


sqrt(1+x*sinx)-sqrt(cosx)

Derivative of sqrt(1+x*sinx)-sqrt(cosx)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
  ______________     ________
\/ 1 + x*sin(x)  - \/ cos(x) 
$$\sqrt{x \sin{\left(x \right)} + 1} - \sqrt{\cos{\left(x \right)}}$$
d /  ______________     ________\
--\\/ 1 + x*sin(x)  - \/ cos(x) /
dx                               
$$\frac{d}{d x} \left(\sqrt{x \sin{\left(x \right)} + 1} - \sqrt{\cos{\left(x \right)}}\right)$$
Detail solution
  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. The derivative of the constant is zero.

        2. Apply the product rule:

          ; to find :

          1. Apply the power rule: goes to

          ; to find :

          1. The derivative of sine is cosine:

          The result is:

        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. Let .

      2. Apply the power rule: goes to

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

        1. The derivative of cosine is negative sine:

        The result of the chain rule is:

      So, the result is:

    The result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
sin(x)   x*cos(x)               
------ + --------               
  2         2          sin(x)   
----------------- + ------------
   ______________       ________
 \/ 1 + x*sin(x)    2*\/ cos(x) 
$$\frac{\sin{\left(x \right)}}{2 \sqrt{\cos{\left(x \right)}}} + \frac{\frac{x \cos{\left(x \right)}}{2} + \frac{\sin{\left(x \right)}}{2}}{\sqrt{x \sin{\left(x \right)} + 1}}$$
The second derivative [src]
                   2                          2                           
    ________    sin (x)    (x*cos(x) + sin(x))    2*(-2*cos(x) + x*sin(x))
2*\/ cos(x)  + --------- - -------------------- - ------------------------
                  3/2                     3/2           ______________    
               cos   (x)    (1 + x*sin(x))            \/ 1 + x*sin(x)     
--------------------------------------------------------------------------
                                    4                                     
$$\frac{\frac{\sin^{2}{\left(x \right)}}{\cos^{\frac{3}{2}}{\left(x \right)}} + 2 \sqrt{\cos{\left(x \right)}} - \frac{2 \left(x \sin{\left(x \right)} - 2 \cos{\left(x \right)}\right)}{\sqrt{x \sin{\left(x \right)} + 1}} - \frac{\left(x \cos{\left(x \right)} + \sin{\left(x \right)}\right)^{2}}{\left(x \sin{\left(x \right)} + 1\right)^{\frac{3}{2}}}}{4}$$
The third derivative [src]
                                                              3        3                                                  
  4*(3*sin(x) + x*cos(x))    2*sin(x)    3*(x*cos(x) + sin(x))    3*sin (x)   6*(-2*cos(x) + x*sin(x))*(x*cos(x) + sin(x))
- ----------------------- + ---------- + ---------------------- + --------- + --------------------------------------------
        ______________        ________                   5/2         5/2                                 3/2              
      \/ 1 + x*sin(x)       \/ cos(x)      (1 + x*sin(x))         cos   (x)                (1 + x*sin(x))                 
--------------------------------------------------------------------------------------------------------------------------
                                                            8                                                             
$$\frac{\frac{3 \sin^{3}{\left(x \right)}}{\cos^{\frac{5}{2}}{\left(x \right)}} + \frac{2 \sin{\left(x \right)}}{\sqrt{\cos{\left(x \right)}}} - \frac{4 \left(x \cos{\left(x \right)} + 3 \sin{\left(x \right)}\right)}{\sqrt{x \sin{\left(x \right)} + 1}} + \frac{6 \left(x \sin{\left(x \right)} - 2 \cos{\left(x \right)}\right) \left(x \cos{\left(x \right)} + \sin{\left(x \right)}\right)}{\left(x \sin{\left(x \right)} + 1\right)^{\frac{3}{2}}} + \frac{3 \left(x \cos{\left(x \right)} + \sin{\left(x \right)}\right)^{3}}{\left(x \sin{\left(x \right)} + 1\right)^{\frac{5}{2}}}}{8}$$
The graph
Derivative of sqrt(1+x*sinx)-sqrt(cosx)