increasing and decreasing functions

I have below a very simple example problem on increasing and decreasing functions, a very interesting topic in math. Till date you have learn t on many topics in math like calculus, geometry constructions and many more topics in math. Look below for some simple example problem on increasing and decreasing function.

Example 1.

Show that f(x)=6x+7 is a strictly increasing function R

Solution:

Let x1integral table in my next post.