Question
Truth table for the given circuit will be



| $x$ | $y$ | $\bar x$ | $a= x.y$ | $b=\bar x.y$ | $z=\bar {a.b}$ |
| $0$ | $0$ | $1$ | $0$ | $0$ | $1$ |
| $0$ | $1$ | $1$ | $0$ | $1$ | $1$ |
| $1$ | $0$ | $0$ | $0$ | $0$ | $1$ |
| $1$ | $1$ | $0$ | $1$ | $0$ | $1$ |
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$y_1=A \sin \left(k x-\omega t+\frac{\pi}{6}\right), \quad y_2=A \sin \left(k x-\omega t-\frac{\pi}{6}\right)$
The equation of resultant wave is
