![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
a.
\Find the sum of the two functions.
\Two signals modeled by ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=805a69544e3b6c93d4df6550e061489b.png\")
and ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=29d0b6d6f9fea44b20cc4200952ba8ad.png\")
.
The sum of the two functions is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3233fde7bc1aebeacefdcfe289cbfbb0.png\")
.
Apply sine sum identity : ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c260065372eac3e4c6637ce8f16f61fd.png\")
.
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f5c104c3f9388fb9f2cdcffeb93512e4.png\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step2.JPG\")
b.
\The combination of the two functions is zero, and the amplitude of the constant function is 0.
\The amplitude of each original function is 10.
\Since ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=4b1a8dfc3948e011700f006cef5808b0.png\")
, their sum can be characterized as producing destructive interference.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
a. The sum of the two functions is zero.
\b. The sum of the two functions can be characterized as producing destructive interference.