Obliczenie: wdXPTq - 1

x  = 
 x_m* cos( ω* t+φ)
x =  x_m* cos( ω* t+φ)x = x_m*cos(ω*t+φ)
x =  cos( t* ω+φ)* x_mx = cos(t*ω+φ)*x_m