4ˣ (x*4ˣ⁻¹)*x² -2x*4ˣ
f⁾(x)=( ----- )⁾ = ------------------------
x² x⁴
-1* (1/16) *1 +2*(1/4) -(1/16) + 1/2
f⁾(-1)= ------------------------------- = ------------------- = 7/16
-1⁴ 1
{200-x=y
{640-2x=3.5y
y=200-x
640-2x=3.5(200-x)
640-2x=700-3.5x
-2x+3.5x=700-640
1.5x=60
x=40л(исп. 1 цист.)
40*2=80л(исп. 2 цист.)
200-40=160л(ост. в 1 цист.)
3,5*160=560л(ост. во 2 цист.)
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