А) 3/6 и 2/6 б)8/20 и 15/20 в) 7/14 и 6/14 г) 9/15 и 10/15
<span>1+5+9+13+17+21+25+29+33+37+41+45+49+53+57+61+65+69+73+77+81+85+89+93+97+101=1326</span>
1.F(x)=6-1/5=5.8
F(x)=6-1/2=5.5
F(x)=6-1/3=5 2/3
F(x)=6-1/ 1/6=6-6=0
2,y=3*3+1=10
y=-4*-4+1=16+1=17
y=5*5+1=26
y=0.5*0.5+1=0.25+1=1.25
1)((x+y)/(x-y)-(x²-xy+y²)/(x²+xy+y²)=
=[(x+y)(x²+xy+y²)-(x-y)(x²-xy+y²)/[(x-y)(x²+xy+y²)]=
=(x³+x²y+xy²+xy²+x²y+y³-x³+x²y-xy²=x²y-xy²+y³)/(x³-y³)=
=(4x²+2y³)/(x³-y³)=2y(2x²+y²)/(x³-y³)
2)x(y³-x³)/[y(y²-2x²)(y²+2x²)*2y(2x²+y²)/(x³-y³)=-2x/(y²-2x²)=2x/(2x-y)