F(x)=-7x^2
f(2)= -7×2^2=-7×4= -28
А) у^2 84
б) 4
в) 16у
<span>г) 8у</span>
Y`=2(x-7)(x+8)+1*(x-7)²=(x-7)*(2x+16+x-7)=(x-7)*(3x+11)=0
x=7 x=-3 2/3
+ _ +
---------------------(-3 2/3)----------------(7)---------------------
max
ymax=y(-11/3)=(-3 2/3-7)²(-3 2/3+8)+29=1024/9*13/3+29=
=(13312+783)/27=14095/27=522 1/27
1) =2p²+2q²+4pq-4pq+p²+q²=3p²+3q²
2)=( b²-a²)(b²+a²)=b⁴-a⁴
3)=n²-9t²+n²-4t²-2n²+13t²=0
S(t)=t³-4t²+6t,t=4c
v(t)=s`(t)=3t²-8t+6
v(4)=3*16-8*4+6=48-32+6=22м/с
a(t)=v`(t)=6t-8
a(4)=6*4-8=24-8=16м/с²