Recent content by skyriver

What i mean by a simple harmonic wave is a function which has this form f(t)=ASin[ωt+φ], where A is the amplitude, ω is the frequency, and φ is the phase,t is time. my question is :if two two harmonic waves A1*Sin(ω1*t+φ1) and B1*Sin(ω2*t+φ2) have different frequencys ,i.e ω1 is not equal...

for example if f[x]=Sin[2x]+Sin[3x] then f[x] can not be a Trigonometric function, why? how many ways to prove this?