D=2^2-4 х 3 х (-5)=64
x1=-2+8/2*3=6/6=1
x2=-2-8/6=-10/6=-5/3=-1(2/3)
<span> f(x) = sin3x•cos3x=1/2*2<span> sin3x•cos3x=1/2sin6x</span></span>
<span><span>f`=1/2*6cos6x=3cos6x C</span></span>
1. 2y - (y-3) = 6
2y - y + 3 = 6
y = 3
x = 0
2. 3x - (5-x) = 11
3x - 5 + x = 11
4x = 16
x = 4
y = 1
Является иррациональным число <span>√192</span>