![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
The functions are ![\"f](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=41e607d360b665bb805b1358d4bb64fc.png\")
.
The composite function formula is ![\"open](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=2e6d123d5deffd59aba2a76cd4375dac.png\")
.
Now we find (f o g)(4).
\![\"open](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=78c4c7563f7cabed8a017cb2df4f2205.png\")
![\"f](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=f2215e24af5b9d4bca765013e9cc927e.png\")
(Substitute the value)![\"\"](\"/userfiles/image/steps_images/step2.JPG\")
![\"f](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=ef5a44deb1b61be802fdaf90f64144f7.png\")
(Simplify)
![\"f](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=53fe2ff193d4aeb044a166f97e8f7178.png\")
(Simplify)
f (31)![\"equal](\"http://www.wiris.com/demo-aspx/pluginwiris3/fckeditor_wiris/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.aspx?formula=0e7a3882899a6d4f349d2bb140edca66.png\")
(Substitute the value)
= 95 (Simplify)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
The value of the function is 95.