This question were given that there is a speaker a and then is one mostly could be and did there at two meter distance apart. And there is a queue point here, which is that distance one meter from the speaker. And there is a point b here which is have distance X. So the remaining distances two minus x. So let's say to relent is and because it was two meter, so we will use this as a variable here for the moment. So for Pat, eh? We have frequency equals two, two zero sis hunch. We can find out the land off this wave so the land becomes mellow city over frequency, which is equality for four meter second, which is sound wave velocity in air over two zero six hours, which is it caused to one point six seven meters. So that's the prevalent off the sound which is produced by the speakers. The questions is about the destructive interference and constitution different. So for destructive interference, we should have just doing defendants. We should have the butt defense should be, But difference should be toe end plus one over lambda by two. Just the road multiple off the Lambda where and can be zero one two Don't, don't don't. And for constructive interference we should have d apart Different speedy should be And Lambda where and can be zero one two Don't don't So let's find out the past defense first So but difference should be close to We have got violent elf and this is X So this is l minus X No, my part defense becomes, Let's say this is Delta So l minus X miners. This becomes L minus two X or ex becomes l minus Delta and or two for the safety of interference. We already found her there for any question Jiro and equals to Jiro so D. But difference should be equals to land a by two. So my del tile should be lambda by two. So using this situation, you find out that Dan Tile equals point eight three five meter. So this gives us X equals two point five eight meter and for and equals two minus one. We can also find out the DealTime Jessica's appoint a three five meter, which gives us X equals to one point for two meter. So these are two values which makes the difference into the destructive interference. So let's go to the park. Be here. This was part eh? To Mr by beena for constructive interference, we can have any cause to one or any question minus one. So for dental also, we can have any question Jiro just the delta and will be cause, which is a trivial Justin. They should be caused to sit the same point, which is not possible. So then tell it calls to lander, which is of course, to one point six seven meter which gives us X equals two point one centimeter and for any cause to minus one, we have del del equals two minus one point six centimeter or X equals to one point three two for a speaker A and B. So these this access out of the just one point in time that this means that this is the point one point two. And for this we have point once and point one centimeter. That means that this is the point. Frank wants him. So these are two points. This this one in the second point. Similarly, the same for the destructive interference. We have two points. This one and this one and the question. See, the sense is that why no, the usual? Because we to use at home. I know what they produce is some kind of just the independence of the cast of independence. There isn't but police easy and say well, because the speakers, which we have at home, are very big, are very big and men. It produces some kind of the They're here, so it produces a wave in much, much broader way or having the Lambda may be the same. But the sound wave within at every point is all almost same, so we don't have any kind of destructive interests for constructive interference. That's it.