Х(6х+1)дробь
в знаменателе уравнение
6х²-17х-3=0
D=289-4*6*(-3)=361
x=17+19/12=3
x=17-19/12= -1/6
х(6х+1)дробь 6(x+1/6)(x-3)=
=х(6х+1)дробь (6х+1)(х-3)=
х дробь х-3
<span>2+cos2x=2</span><span>sin</span><span>x</span>
-sin^2(x)+cos^2(x)+2=2 sin(x)
cos(2x)-2 sin(x)=-2
4n-m-3m+n=(4n+n)-(3m-m)=5n-2m
1) С=πR²
С=π×6²
С=36π
2) С= πR²
С=π×1.4
С=1,95π
b₅ = 3/4, q = -2
Формула:
b₅ = b₁ * q⁴
3/4 = b₁ * (-2)⁴
3/4 = b₁ * 16
b₁ = 3/4 : 16
b₁ = 3/64
S₆ = b₁ * (1-q⁶) / (1-q) = 3/64* (1-64) / (1- (-2)) = 3/64 * (-63) / 3 = 3/64 * (-21) = -63/64