Spde → TI-81

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This one goes out to the best graphing calculator that ever was.

size(500, 500)
def sliding_sine = points(0, 10) { 
  x => sin( x * mouseX * 5 / width ) 
} map { 
  case (x, y) => (x, y * mouseY * 250 / height)
}

def draw {
  background(200)
  lineplot(sliding_sine)
}