<span>(4 5/13 + 2 8/13) - (1 12/13 + 3 7/13) = 1 7/13</span>
<span>
</span>
<span>1) 5 8 13 2) 12 7 19 6 3) 13 6 7 </span>
<span> 4--- + 2--- = 6----- = 7 1--- + 3--- = 4---- = 5--- 6--- - 5--- = 1---</span>
<span> 13 13 13 13 13 13 13 13 13 13</span>
<span>
</span>
<span>4 5/13 + (2 8/13-1 12/13) + 3 7/13 = 8 8/13</span>
<span>
</span>
<span>1) 8 12 13+8-12 9 2) 5 9 7 21 8</span>
<span> 2--- - 1--- = ---------- = --- 4--- + --- + 3--- = 7---- = 8---</span>
<span> 13 13 13 13 13 13 13 13 13</span>
Решение:
Найти область определения функции,если y=4x^4-5x-1
D(y) = R
25 х
– = – =25*70+30х
30 70
30х=1750:30=58,3(3)
Вероятность герба при одном бросании 1/2
для трех монет
Р=1/2*1/2*1/2=1/8