3.5-bo'lim : Trig funksiyalarining hosilalari
4. \(f\left( x \right) = 2\cos \left( x \right) - 6\sec \left( x \right) + 3\) ni farqlang.
Yechim
Bu erda lotinni olishdan boshqa ko'p narsa qilish kerak emas.
\[f'\left( x \right) = - 2\sin \left( x \right) - 6\sec \left( x \right)\tan \left( x \right)\]