ts/tutorials/ex45.c

109   u = 2\pi^2 t + cos(\pi x) + cos(\pi y)
110   F(u) = 2\pi^2 - \pi^2 (cos(\pi x) + cos(\pi y)) + \pi^2 (cos(\pi x) + cos(\pi y)) - 2\pi^2 = 0
113   u = 3\pi^2 t + cos(\pi x) + cos(\pi y) + cos(\pi z)
114 …F(u) = 3\pi^2 - \pi^2 (cos(\pi x) + cos(\pi y) + cos(\pi z)) + \pi^2 (cos(\pi x) + cos(\pi y) + co…
140   u    = pi^2 cos(t) + cos(\pi x) + cos(\pi y)
141   u_t  = -pi^2 sin(t)
142   \Delta u = -\pi^2 (cos(\pi x) + cos(\pi y))
143   f    = pi^2 sin(t) - \pi^2 (cos(\pi x) + cos(\pi y))
144 …F(u) = -\pi^2 sin(t) + \pi^2 (cos(\pi x) + cos(\pi y)) - \pi^2 (cos(\pi x) + cos(\pi y)) + \pi^2 s…
147   u    = pi^2 cos(t) + cos(\pi x) + cos(\pi y) + cos(\pi z)
148   u_t  = -pi^2 sin(t)
149   \Delta u = -\pi^2 (cos(\pi x) + cos(\pi y) + cos(\pi z))
150   f    = pi^2 sin(t) - \pi^2 (cos(\pi x) + cos(\pi y) + cos(\pi z))
151 …F(u) = -\pi^2 sin(t) + \pi^2 (cos(\pi x) + cos(\pi y) + cos(\pi z)) - \pi^2 (cos(\pi x) + cos(\pi …