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Derivative of lgx-2*lg^2x

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

The graph:

from to

Piecewise:

The solution

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

    1. The derivative of is .

    2. 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 is .

        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]
1   4*log(x)
- - --------
x      x    
$$- \frac{4 \log{\left(x \right)}}{x} + \frac{1}{x}$$
The second derivative [src]
-5 + 4*log(x)
-------------
       2     
      x      
$$\frac{4 \log{\left(x \right)} - 5}{x^{2}}$$
The third derivative [src]
2*(7 - 4*log(x))
----------------
        3       
       x        
$$\frac{2 \left(7 - 4 \log{\left(x \right)}\right)}{x^{3}}$$