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Derivative of (1+sin(2x))/(1-sin(2x))+tg(2x)

Function f() - derivative -N order at the point
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Piecewise:

The solution

You have entered [src]
1 + sin(2*x)           
------------ + tan(2*x)
1 - sin(2*x)           
$$\tan{\left(2 x \right)} + \frac{\sin{\left(2 x \right)} + 1}{1 - \sin{\left(2 x \right)}}$$
(1 + sin(2*x))/(1 - sin(2*x)) + tan(2*x)
Detail solution
  1. Differentiate term by term:

    1. Apply the quotient rule, which is:

      and .

      To find :

      1. Differentiate term by term:

        1. The derivative of the constant is zero.

        2. Let .

        3. The derivative of sine is cosine:

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

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

            1. Apply the power rule: goes to

            So, the result is:

          The result of the chain rule is:

        The result is:

      To find :

      1. Differentiate term by term:

        1. The derivative of the constant is zero.

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

          1. Let .

          2. The derivative of sine is cosine:

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

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

              1. Apply the power rule: goes to

              So, the result is:

            The result of the chain rule is:

          So, the result is:

        The result is:

      Now plug in to the quotient rule:

    2. Rewrite the function to be differentiated:

    3. Apply the quotient rule, which is:

      and .

      To find :

      1. Let .

      2. The derivative of sine is cosine:

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

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

          1. Apply the power rule: goes to

          So, the result is:

        The result of the chain rule is:

      To find :

      1. Let .

      2. The derivative of cosine is negative sine:

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

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

          1. Apply the power rule: goes to

          So, the result is:

        The result of the chain rule is:

      Now plug in to the quotient rule:

    The result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
         2         2*cos(2*x)    2*(1 + sin(2*x))*cos(2*x)
2 + 2*tan (2*x) + ------------ + -------------------------
                  1 - sin(2*x)                      2     
                                      (1 - sin(2*x))      
$$2 \tan^{2}{\left(2 x \right)} + 2 + \frac{2 \cos{\left(2 x \right)}}{1 - \sin{\left(2 x \right)}} + \frac{2 \left(\sin{\left(2 x \right)} + 1\right) \cos{\left(2 x \right)}}{\left(1 - \sin{\left(2 x \right)}\right)^{2}}$$
The second derivative [src]
  /                       2                                                                       2                    \
  |   sin(2*x)       2*cos (2*x)        /       2     \            (1 + sin(2*x))*sin(2*x)   2*cos (2*x)*(1 + sin(2*x))|
4*|------------- + ---------------- + 2*\1 + tan (2*x)/*tan(2*x) - ----------------------- - --------------------------|
  |-1 + sin(2*x)                  2                                                   2                          3     |
  \                (-1 + sin(2*x))                                     (-1 + sin(2*x))            (-1 + sin(2*x))      /
$$4 \left(2 \left(\tan^{2}{\left(2 x \right)} + 1\right) \tan{\left(2 x \right)} + \frac{\sin{\left(2 x \right)}}{\sin{\left(2 x \right)} - 1} - \frac{\left(\sin{\left(2 x \right)} + 1\right) \sin{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{2}} + \frac{2 \cos^{2}{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{2}} - \frac{2 \left(\sin{\left(2 x \right)} + 1\right) \cos^{2}{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{3}}\right)$$
The third derivative [src]
  /                 2                          3                                                                                              3                                                         \
  |  /       2     \       cos(2*x)       6*cos (2*x)           2      /       2     \   (1 + sin(2*x))*cos(2*x)   6*cos(2*x)*sin(2*x)   6*cos (2*x)*(1 + sin(2*x))   6*(1 + sin(2*x))*cos(2*x)*sin(2*x)|
8*|2*\1 + tan (2*x)/  + ------------- - ---------------- + 4*tan (2*x)*\1 + tan (2*x)/ - ----------------------- - ------------------- + -------------------------- + ----------------------------------|
  |                     -1 + sin(2*x)                  3                                                    2                       2                        4                                3         |
  \                                     (-1 + sin(2*x))                                      (-1 + sin(2*x))         (-1 + sin(2*x))          (-1 + sin(2*x))                  (-1 + sin(2*x))          /
$$8 \left(2 \left(\tan^{2}{\left(2 x \right)} + 1\right)^{2} + 4 \left(\tan^{2}{\left(2 x \right)} + 1\right) \tan^{2}{\left(2 x \right)} + \frac{\cos{\left(2 x \right)}}{\sin{\left(2 x \right)} - 1} - \frac{\left(\sin{\left(2 x \right)} + 1\right) \cos{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{2}} - \frac{6 \sin{\left(2 x \right)} \cos{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{2}} + \frac{6 \left(\sin{\left(2 x \right)} + 1\right) \sin{\left(2 x \right)} \cos{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{3}} - \frac{6 \cos^{3}{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{3}} + \frac{6 \left(\sin{\left(2 x \right)} + 1\right) \cos^{3}{\left(2 x \right)}}{\left(\sin{\left(2 x \right)} - 1\right)^{4}}\right)$$