3x=-π/2+2πk,k∈Z
x=-π/6+2πk/3,k∈Z
Y=2sinx-x на отрезке от 0 до П
y(0)=0 <span><span>y(π)=-π
</span>y'=2cosx-1 cosx=1/2 x=+-π/3+2πn
n=0 x=+-π/3
n=1 x=2π-π/3=6π/3-π/3=5π/3
n=-1 x=-π/3-2π<0
n=2 x=π/3+4π>π
xmax=</span><span>5π/3 xmin=-π/3
ymax=2sin</span><span><span>5π/3</span>-π/3=√3-π/3
ymin=-√3-π/3
</span>
100/9 +7/3 + 2 + 4 + 3/7 +1
1)4* 3/7=12/7=1 5/7(одна целая 5/7)
2)100/9 +7/3=13 4/9( тринадцать целых 4/9)
3)13 4/9 +2=15 4/9 (пятнадцать целых 4/9)
4)1 5/7+1=2 5/7(две целых 5/7)
5)15 4/9 + 2 5/7 = 18 10/63
(4x²-1)/(x+1)²-3x²/(x+1)²=(4x²-1-3x²)/(x+1)²=(x²-1)/(x+1)²=
=(x-1)(x+1)/9x+1)²=(x-1)/(x+1)
x=1/3
(1/3-1):(1/3+1)=-2/3:4/3=-2/3*3/4=-1/2