2904ea33-6bb5-4166-aab4-6b3078cc3f6d 47 4 5 false false 0 decimal

&[DATE] &[TIME] - &[FILENAME]

Vibrations of a rectangular membrane

Each press of F9 increases the value of the variable by one.

By continuously pressing F9 animation is played.

~a- absolute variable (names start with ~)           mkraska algoritm kMax 40 : ~a IsDefined ~a kMax < (& ~a ~a 1 + (: ~a 1 : if t ~a : 31 line

a 10 :

b 10 :

x y m n F 0.3 m π * x 0.5 a * + (* a / sin * n π * y 0.5 b * + (* b / sin * 2 π * t 0.001 + (* kMax / cos * :

x y B x a - > (x a ≤ (& (y b - > (y b ≤ (& (* (:

x y m n f x y m n F x y B * :

x y 1 1 f x y 1 2 f x y 2 1 f x y 2 2 f