Ответ:
10,4 + 3x - ( x + 10,4 ) при х = 0,3
10,4 + 3 * 0,3 - ( 0,3 + 10,4 ) = 10,4 + 3 * 0,3 - 10,7 = 10,4 + 0,9 - 10,7 = 11,3 - 10,7 = 0,6
P.S. знак * - знак умножения
10,4+3*0.3-(0,3+10,4)=10,4+0.9-10,7=0,6
<span>a+b+c=300 </span><span>a/b = 1/9 -> b = 9*a </span><span>a*b*c = max </span><span>10*a+c = 300 -> c = 300-10*a </span><span>9*(300-10*a)*a*a = max </span><span>300*a^2-10*a^3 = max -> Derivative: 2*300*a - 30*a^2 = 0-> </span><span>a1 = 0 </span><span>a2=20 max; </span><span>a = 20 </span><span>b = 180 </span><span>c = 100</span>