0,45*3,2=1,44 тонн
0,55*2,2=1,21 тонн
1,44/1.21=1.2 приблизительно
<span>4+b/4-b*2b^2/4+b-b=</span>4+b/4-b*2b^2/4=4+b/4-2b^3/4=<span>4+b/4-b^3/2=(16+b-2b^3)/4</span>
<span>6=-
+5x =>
-5x+6=0 => x=(5±√(25-24)/2=(5±1)/2 </span>
<span>x1=2, x2=3. </span>
<span>y’=-2x+5; </span>
<span>Касательная 1. </span>
<span>k=y’(2)=-4+5=1; </span>
<span>y-6=1•(x-2) => y=x+4. </span>
<span>Касательная 2. </span>
<span>k=y’(3)=-6+5=-1; </span>
<span>y-6=-1•(x-2) => y=-x+8.</span>