(f o g)(-1)

 I know what you're thinking, what the heck is my title all about? Simple answer, it's the composite function. The composition of f and g is defined as (f o g)(x) = f(g(x)), where x is in the domain of g and g(x) is in the domain of f. So how would we go about solving such an equation?


 Given that f(x) = 2x-5 and g(x) = x -3.


  Consider each function seperatly and read slowly (yet carefully).
   (f o g)(-1) = f(g(-1))
   f(g(-1)) = 2[(-1)-3]-5
   f(g(-1)) = 2[3]-5
   f(g(-1)) = 6-5
   f(g(-1)) = 1


 Simply put, you MUST take the time to read what's going on. Once the instructions are read on mixing a packet of Kool-Aid it's simply executed. Same with this mathmatical equation (even if it is part of a College Algebra math course). It is easily written out, but a bit harder to input into a graphing calculator.


 If you are in a College Algebra class at your college, take the time to see if it uses the aid of MyMathLab. It's a packet that is sold with the math book at your schools bookstore, and comes with access to CourseCompass. And be sure the use of a TI-83, a user friendly graphing calculator which is easily purchased at stores such as Walmart, or Kmart.


 Want to learn more about mathmatics? Check out the Georgia Northwestern Tech website! Our Rock Spring, GA campus offers crutial math classes, with excellent teachers. Scheduling is no problem, as morning, afternoon, evening, and online/hybrid courses are always offered! For more answers and information on everything about our school please feel free to visit our website.