Mister Exam

Derivative of log5(1-2x)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
log(1 - 2*x)
------------
   log(5)   
$$\frac{\log{\left(1 - 2 x \right)}}{\log{\left(5 \right)}}$$
log(1 - 2*x)/log(5)
Detail solution
  1. The derivative of a constant times a function is the constant times the derivative of the function.

    1. Let .

    2. The derivative of is .

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

      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:

      The result of the chain rule is:

    So, the result is:

  2. Now simplify:


The answer is:

The graph
The first derivative [src]
      -2        
----------------
(1 - 2*x)*log(5)
$$- \frac{2}{\left(1 - 2 x\right) \log{\left(5 \right)}}$$
The second derivative [src]
       -4         
------------------
          2       
(-1 + 2*x) *log(5)
$$- \frac{4}{\left(2 x - 1\right)^{2} \log{\left(5 \right)}}$$
The third derivative [src]
        16        
------------------
          3       
(-1 + 2*x) *log(5)
$$\frac{16}{\left(2 x - 1\right)^{3} \log{\left(5 \right)}}$$