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Derivative of ln*(sqrt((2*x+3)/(4*x+5)))

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
   /    _________\
   |   / 2*x + 3 |
log|  /  ------- |
   \\/   4*x + 5 /
$$\log{\left(\sqrt{\frac{2 x + 3}{4 x + 5}} \right)}$$
log(sqrt((2*x + 3)/(4*x + 5)))
Detail solution
  1. Let .

  2. The derivative of is .

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

    1. Let .

    2. Apply the power rule: goes to

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

      1. Apply the quotient rule, which is:

        and .

        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. Apply the power rule: goes to

            So, the result 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. Apply the power rule: goes to

            So, the result is:

          The result is:

        Now plug in to the quotient rule:

      The result of the chain rule is:

    The result of the chain rule is:

  4. Now simplify:


The answer is:

The graph
The first derivative [src]
/   1      2*(2*x + 3)\          
|------- - -----------|*(4*x + 5)
|4*x + 5             2|          
\           (4*x + 5) /          
---------------------------------
             2*x + 3             
$$\frac{\left(4 x + 5\right) \left(- \frac{2 \left(2 x + 3\right)}{\left(4 x + 5\right)^{2}} + \frac{1}{4 x + 5}\right)}{2 x + 3}$$
The second derivative [src]
  /     2*(3 + 2*x)\ /   1         2   \
2*|-1 + -----------|*|------- + -------|
  \       5 + 4*x  / \3 + 2*x   5 + 4*x/
----------------------------------------
                3 + 2*x                 
$$\frac{2 \left(\frac{2 \left(2 x + 3\right)}{4 x + 5} - 1\right) \left(\frac{2}{4 x + 5} + \frac{1}{2 x + 3}\right)}{2 x + 3}$$
The third derivative [src]
  /     2*(3 + 2*x)\ /      1            4                 2         \
8*|-1 + -----------|*|- ---------- - ---------- - -------------------|
  \       5 + 4*x  / |           2            2   (3 + 2*x)*(5 + 4*x)|
                     \  (3 + 2*x)    (5 + 4*x)                       /
----------------------------------------------------------------------
                               3 + 2*x                                
$$\frac{8 \left(\frac{2 \left(2 x + 3\right)}{4 x + 5} - 1\right) \left(- \frac{4}{\left(4 x + 5\right)^{2}} - \frac{2}{\left(2 x + 3\right) \left(4 x + 5\right)} - \frac{1}{\left(2 x + 3\right)^{2}}\right)}{2 x + 3}$$