Mister Exam

Derivative of ln(2x+3)

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

The graph:

from to

Piecewise:

The solution

You have entered [src]
log(2*x + 3)
log(2x+3)\log{\left(2 x + 3 \right)}
log(2*x + 3)
Detail solution
  1. Let u=2x+3u = 2 x + 3.

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

  3. Then, apply the chain rule. Multiply by ddx(2x+3)\frac{d}{d x} \left(2 x + 3\right):

    1. Differentiate 2x+32 x + 3 term by term:

      1. The derivative of a constant times a function is the constant times the derivative of the function.

        1. Apply the power rule: xx goes to 11

        So, the result is: 22

      2. The derivative of the constant 33 is zero.

      The result is: 22

    The result of the chain rule is:

    22x+3\frac{2}{2 x + 3}

  4. Now simplify:

    22x+3\frac{2}{2 x + 3}


The answer is:

22x+3\frac{2}{2 x + 3}

The graph
02468-8-6-4-2-1010-100100
The first derivative [src]
   2   
-------
2*x + 3
22x+3\frac{2}{2 x + 3}
The second derivative [src]
   -4     
----------
         2
(3 + 2*x) 
4(2x+3)2- \frac{4}{\left(2 x + 3\right)^{2}}
The third derivative [src]
    16    
----------
         3
(3 + 2*x) 
16(2x+3)3\frac{16}{\left(2 x + 3\right)^{3}}