Mister Exam

Derivative of sin(ln(x))

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

The graph:

from to

Piecewise:

The solution

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

  2. The derivative of sine is cosine:

    ddusin(u)=cos(u)\frac{d}{d u} \sin{\left(u \right)} = \cos{\left(u \right)}

  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:

    cos(log(x))x\frac{\cos{\left(\log{\left(x \right)} \right)}}{x}


The answer is:

cos(log(x))x\frac{\cos{\left(\log{\left(x \right)} \right)}}{x}

The graph
02468-8-6-4-2-1010-1010
The first derivative [src]
cos(log(x))
-----------
     x     
cos(log(x))x\frac{\cos{\left(\log{\left(x \right)} \right)}}{x}
The second derivative [src]
-(cos(log(x)) + sin(log(x))) 
-----------------------------
               2             
              x              
sin(log(x))+cos(log(x))x2- \frac{\sin{\left(\log{\left(x \right)} \right)} + \cos{\left(\log{\left(x \right)} \right)}}{x^{2}}
The third derivative [src]
3*sin(log(x)) + cos(log(x))
---------------------------
              3            
             x             
3sin(log(x))+cos(log(x))x3\frac{3 \sin{\left(\log{\left(x \right)} \right)} + \cos{\left(\log{\left(x \right)} \right)}}{x^{3}}
The graph
Derivative of sin(ln(x))