### Home > CALC > Chapter 3 > Lesson 3.2.2 > Problem3-60

3-60.

Differentiate the following expressions.

1. $f ( x ) = \frac { 9 } { x }$

1. $f(x) = (-3x^7-6x)$

1. $f(x) = (5x^{−4} )$

1. $f(x) = m$

$f ( x ) = - 3 x ^ { 7 } - 6 x$

$f^{\prime}(x) = -21x^-6$

Refer to hint in part (b).

$m$ is a constant. What is the slope of the a
horizontal line $y = m$?