- #1
Mdhiggenz
- 327
- 1
Homework Statement
L[cos2at]
I know that L[cost] = s/(s2+bs)
I know that cos2at can also be written as 1/2(1+cos2at)
and so I then got the L[1/2]+1/2L[cos2at)]
Which gave me s/(s2+(2a)2)
However this is not correct, there was a + 2at term on the numerator as well.