Wave
Single waves

For any dimension d {\displaystyle d} (1, 2, or 3), the wave's domain is then a subset D {\displaystyle D} of R d {\displaystyle \mathbb {R} ^{d}}, such that the function value F (x, t) {\displaystyle F(x,t)} is defined for any point x {\displaystyle x} in D {\displaystyle D}. For example, when describing the motion of a drum skin, one can consider D {\displaystyle D} to be a disk (circle) on the plane R 2 {\displaystyle \mathbb {R} ^{2}} with center at the origin (0, 0) {\displaystyle (0,0)}, and let F (x, t) {\displaystyle F(x,t)} be the vertical displacement of the skin at the point x {\displaystyle x} of D {\displaystyle D} and at time t {\displaystyle t}.
combination:two_responses