$A_{1}(a,b) = 2\cos(2b-a+1)$
$A_{2}(a,b) = 2\cos(-2b-a+1)$
$A_{3}(a,b) = 2\cos(2b+a+1)$
I want to know which waves are moving $+a$ or $-a$
Thanks
$A_{1}(a,b) = 2\cos(2b-a+1)$
$A_{2}(a,b) = 2\cos(-2b-a+1)$
$A_{3}(a,b) = 2\cos(2b+a+1)$
I want to know which waves are moving $+a$ or $-a$
Thanks