Y=2.5/7-6x^3+х
y '=-18x^2+1
<span>y '(0)=1 (вместо х ставим 0)</span>
<span>500-180:(90:45)+30=440
1. 90/45=2
2.180/2=90
3.500-90=410
4.410+30=440.
</span>
<span>(90+150:30)•(80:4•5)=195
</span>1.150/30=5
2.90+5=95
3.80/4=20
4.20*5=100
5.95+100=195.
5/12 х +0,75х = 8,2 - 6,94
5/12 х + 3/4 х = 1,26
5/12 х + 9/12 х = 1,26
1 1/6 х = 1,26
х= 1,26 : 1 1/6 = 126/100 : 7/6 = 126/100* 6/7 = (18*6)/(100*1)
х= 1,08
============================
5/12 * 1,08 + 0,75*1,08 = 8,2-6,94
5/12 * 108/100 + 0,81 = 1,26
0,45 +0,81=1,26
1,26=1,26