Aprēķins: 3wtawx - 1

x  = 
 x_m* cos( ω* t+φ)
x =  x_m* cos( ω* t+φ)$$x$$ = $$x_{m}\cdot cos(\omega\cdot t+\phi)$$
x =  cos( t* ω+φ)* x_m$$x$$ = $$cos(t\cdot \omega+\phi)\cdot x_{m}$$