Good evening. Could you explain this step to me? Thanks.
2026-04-07 08:08:14.1775549294
Sum of cos(x) to multiply of sen(x) in integral
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Creo que debería ser $$\cos^2\left(\frac{\omega_1 + \omega_2}{2}t\right)\cos^2\left(\frac{\omega_2 - \omega_1}{2}t\right)$$ en lugar de $$\operatorname{sen}^2\left(\frac{\omega_1 + \omega_2}{2}t\right)\operatorname{sen}^2\left(\frac{\omega_2 - \omega_1}{2}t\right).$$