Fizika 1-bilet

2 – BILET
1. Hisoblang:

2. Tengsizliklar sistemasini yeching: .

3. tenglamalar sistemasining yechimi tenglamaning ildizlari ekani ma’lum bo‘lsa, va ni toping.

4. Kosinuslar teoremasini ta’riflang va isbotlang.

5. Tomonlari 26, 28, 30 ga teng bo‘lgan uchburchakka ichki chizilgan aylana radiusini toping.

3 - BILET
1.Hisoblang:

2. Tenglamani yeching:

3. Arifmetik progressiyada bo‘lsa, n-1 ni toping.

4. Sinuslar teoremasini ta’riflang va isbotlang.

5. Uchburchak to‘gri burchagining bissektrisasi gipotenuzani 15 va 20 ga teng kesmalarga ajratadi. Uchburchakning yuzini toping.