# Question #0caf0

##### 1 Answer

Oct 2, 2016

#### Answer:

#### Explanation:

Using the product rule

along with the derivatives

#d/dx x = 1# #d/dx ln(x) = 1/x#

we have

#=d/dx (-xln(x))#

#=-x(1/x) + (-1)ln(x)#

#=-1 + ln(x^(-1))#

#=ln(1/x)-1#