The function is .
Consider the functions and .
Definition of composite function : .
.
The functions are and .
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and ![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3d3a0068acc9270bdb7f79f6be3f8b38.png\")
.![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ed3386ca1cf7476d211160efad6b6783.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=8e216b8bf20f278bfc574ec2ff08abb4.png\")
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. and .![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
and .