Mister Exam

Derivative of lnx^5

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
   5   
log (x)
log(x)5\log{\left(x \right)}^{5}
d /   5   \
--\log (x)/
dx         
ddxlog(x)5\frac{d}{d x} \log{\left(x \right)}^{5}
Detail solution
  1. Let u=log(x)u = \log{\left(x \right)}.

  2. Apply the power rule: u5u^{5} goes to 5u45 u^{4}

  3. Then, apply the chain rule. Multiply by ddxlog(x)\frac{d}{d x} \log{\left(x \right)}:

    1. The derivative of log(x)\log{\left(x \right)} is 1x\frac{1}{x}.

    The result of the chain rule is:

    5log(x)4x\frac{5 \log{\left(x \right)}^{4}}{x}


The answer is:

5log(x)4x\frac{5 \log{\left(x \right)}^{4}}{x}

The graph
02468-8-6-4-2-1010-20002000
The first derivative [src]
     4   
5*log (x)
---------
    x    
5log(x)4x\frac{5 \log{\left(x \right)}^{4}}{x}
The second derivative [src]
     3                
5*log (x)*(4 - log(x))
----------------------
           2          
          x           
5(log(x)+4)log(x)3x2\frac{5 \cdot \left(- \log{\left(x \right)} + 4\right) \log{\left(x \right)}^{3}}{x^{2}}
The third derivative [src]
      2    /       2              \
10*log (x)*\6 + log (x) - 6*log(x)/
-----------------------------------
                  3                
                 x                 
10(log(x)26log(x)+6)log(x)2x3\frac{10 \left(\log{\left(x \right)}^{2} - 6 \log{\left(x \right)} + 6\right) \log{\left(x \right)}^{2}}{x^{3}}
The graph
Derivative of lnx^5