![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
The definition of sum of the two functions is (f + g) (x) = f(x) + g(x).
\(f + g) (x) = ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=491e680a9c88ca97cd946d4be444bb02.png\")
(f + g) (x) = ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0031fe397640c07ed5bfc4ac7eecf69b.png\")
(Simplify)
(f + g) (x) = ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e701ce157d90189d1eb833b95d5a839c.png\")
(Simplify)
The domain of f + g consists of those numbers x that are in the domains of both f and g.
\The domain of f + g is set of all real numbers.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
The value of the function is and domain is the set of all real numbers.