snowy

Thanks Genius for your response! I tried your advice but one can separate the t and x term only if they had the same amplitude, but here even the amplitude is different!

By differentiating dy/dx=0 d2y/dx2 >0 for min <0 for max PS. I have a restriction of only 2 more posts , so ill keep editing this post to reply.

Thanks Klaynos, for your response! I tried a rough sketch , because from the equations , it can be inferred that T1=2T2 And the resultant amplitude will be max when y2 = 4 , but I'm not sure about y1. Yes! I am aware of beat frequency, it is when 2 waves of nearly equal frequency are superimposed, and the value of it is the difference in frequencies!

Two superimposing waves are represented by equations y1= 2sin 2π(10t - 0.4x) y2= 4sin 2π(20t - 0.8x) Find the ratio of Imax and Imin. Ans is (25:9) I know that intensity is proportional to the square of amplitude and maximum amplitude = a1 + a2 minimum amplitude = a1 - a2 but these equations are only applicable for waves with same frequency. I also tried plotting it , but I am unable to figure out the value of y1 when y2=4 so how do I proceed ? Thanks in advance!