1. [-3;3].
y= , , , 1. , .
Open Office.org Calc
1) ;;
2); ; B3:H3;
: ;
3): B2:H2
4) x;
5); : x; ; : ;
:0,1:
x
x. , [-3;-2],[ 0;1] [2;3].
2. x0.
1. f(x)=
f(x)=3x2-8,
f(x)=6x.
2. [-3;-2].
, 0:
F(x) = 3x2-8=0,
X=
[-3;-2], . x=-3
f (-3) = 3 (-3)2 - 8 = 19 > 0
3. , [-3;-2] , .. f(x)= . f(x) = 6x [-3;-2] , .. f(x)= .
f(x0)f(x0)>0
x0 . , x0 f(x) . , f(x0) .
f(x) x=3 : f(-3)=-1.
x0 [-3;-2],.. x0 = -3.
3. Ɛ=0,0001.
1) (1), f(x)= , f(x)=3x2-8,
= -3
2) A .
3) B3 x1 (1)
4) B4 |x-x0|
0,0526 Ɛ= 0,0001, .
5) x2 |x2-x1|
B2:B4 C.
6) |x3-x2|=9,23*10-7
Ɛ= 0,0001,
x3=-2,946 [-3;-3].
3.