Mister Exam

Derivative of f(x)=xlnx+ln²x+1

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

The graph:

from to

Piecewise:

The solution

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

    1. Differentiate term by term:

      1. Apply the product rule:

        ; to find :

        1. Apply the power rule: goes to

        ; to find :

        1. The derivative of is .

        The result is:

      2. Let .

      3. Apply the power rule: goes to

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

        1. The derivative of is .

        The result of the chain rule is:

      The result is:

    2. The derivative of the constant is zero.

    The result is:


The answer is:

The graph
The first derivative [src]
    2*log(x)         
1 + -------- + log(x)
       x             
$$\log{\left(x \right)} + 1 + \frac{2 \log{\left(x \right)}}{x}$$
The second derivative [src]
    2   2*log(x)
1 + - - --------
    x      x    
----------------
       x        
$$\frac{1 - \frac{2 \log{\left(x \right)}}{x} + \frac{2}{x}}{x}$$
The third derivative [src]
     6   4*log(x)
-1 - - + --------
     x      x    
-----------------
         2       
        x        
$$\frac{-1 + \frac{4 \log{\left(x \right)}}{x} - \frac{6}{x}}{x^{2}}$$