theorem TrF160: :: FUZZY_5:36

for F being Function of REAL,REAL
for a, b, c, d being Real
for i being Integer st a <> 0 & i <> 0 & ( for x being Real holds F . x = max (0,(min (1,((c * (sin ((a * x) + b))) + d)))) ) holds
F is ((2 * PI) / a) * i -periodic