our teacher gave us this one in class and its not one of the "regular" ones we do so i same not sure how to set it up w/o getting messy numbers. 2 loud speakers 2.5m apart and a reciever 3m from one speaker and 3.5m from the other. a. find the lowest frequency where the receiver is a node b. # of nodal lines to get the wavelength in order to find the frequency for (a.) do i just use the relationship X/L=n(lambda)/d?????