Identify the amplitude, period, and frequency of the graphed function. Which of these statements about the function is correct? (1 point) The graph has a frequency of \( \frac{1}{2 \pi} \). The graph has an amplitude of 2 . The graph has an amplitude of 6 . The graph has a period of 1 .

a) \( \sin ^{4} x+\cos ^{2} x \cdot \sin ^{2} x-\sin ^{2} x \)

1. Най иите а) \( -9 \cos \alpha ; \) б) \( \sqrt{2} \) tga, если \( \sin \alpha=-\frac{2 \sqrt{2}}{3} \quad \alpha \in\left(\frac{3 \pi}{2} ; 2 \pi\right) \)

b) \( 3\left(\cos ^{4} x+\sin ^{4} x\right)-2\left(\cos ^{6} x+\sin ^{6} x\right)=1 \)

8) \( y=-3 \cos 2 x \) NOTA: Las gráficas deben de tener como mínimo un periodo.

Calcula la amplitud, el periodo y traza las gráficas: 7) \( y=\operatorname{sen}\left(\frac{x}{2}\right) \)