# Find the Derivative – d/dx y=(cos(x))/x

Differentiate using the Quotient Rule which states that is where and .
The derivative of with respect to is .
Differentiate using the Power Rule.
Move to the left of .
Rewrite as .
Differentiate using the Power Rule which states that is where .
Multiply by .
Simplify.
Factor out of .
Factor out of .
Factor out of .
Rewrite as .
Move the negative in front of the fraction.
Find the Derivative – d/dx y=(cos(x))/x