1003085807

Podoblast: 
Goniometrické rovnice a nerovnice
Část: 
B
Project ID: 
1003085807
Accepted: 
1
Clonable: 
0
Easy: 
0
Pro jaké \( x\in\left(-\frac{\pi}2;\ \frac{\pi}2\right) \) platí nerovnice \( \mathrm{tg}\,3x < -1 \)?
\( x\in\left(-\frac{\pi}2;-\frac{5\pi}{12}\right)\cup\left(-\frac{\pi}6;-\frac{\pi}{12}\right)\cup\left(\frac{\pi}6;\frac{\pi}4\right) \)
\( x\in\left(-\frac{\pi}6;-\frac{\pi}{12}\right)\cup\left(\frac{\pi}6;\frac{\pi}4\right) \)
\( x\in\left(-\frac{\pi}2;-\frac{5\pi}{12}\right)\cup\left(-\frac{\pi}6; - \frac{\pi}{12}\right) \)
\( x\in\left(-\frac{\pi}6; -\frac{\pi}{12}\right)\cup\left(\frac{\pi}{12};\frac{\pi}6\right)\cup\left(\frac{\pi}6;\frac{\pi}4\right) \)