Hi, Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x)
A Andy23892 New member Joined Jun 26, 2017 Messages 1 Jun 26, 2017 #1 Hi, Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x)
D Deleted member 4993 Guest Jun 26, 2017 #2 Andy23892 said: Hi, Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x) Click to expand... What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll start with the definitions. You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL: http://www.freemathhelp.com/forum/announcement.php?f=33
Andy23892 said: Hi, Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x) Click to expand... What are your thoughts? Please share your work with us ...even if you know it is wrong. If you are stuck at the beginning tell us and we'll start with the definitions. You need to read the rules of this forum. Please read the post titled "Read before Posting" at the following URL: http://www.freemathhelp.com/forum/announcement.php?f=33
stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 16,582 Jun 29, 2017 #3 Andy23892 said: Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x) Click to expand... What do you get when you differentiate e^x? How about when you differentiate e^(-x)? How about e^(x/2)? And e^(-x/2)? What do you get when you differentiate cos(x)? How about when you differentiate cos(2x)? What do you get when you apply the Product Rule to the original function? Please be complete, so we can see where things are going sideways, and provide suggestions. Thank you!
Andy23892 said: Looking some help to Differentiate this equation f(x) = e^(−x/2) cos(2x) Click to expand... What do you get when you differentiate e^x? How about when you differentiate e^(-x)? How about e^(x/2)? And e^(-x/2)? What do you get when you differentiate cos(x)? How about when you differentiate cos(2x)? What do you get when you apply the Product Rule to the original function? Please be complete, so we can see where things are going sideways, and provide suggestions. Thank you!