, , , V 0, t ( g ); Q, R, I Q = RI 2.
. = 2 + b + , , b, .
, .. (¥, +¥), (¥, +¥). y = ax 2, . ; a > 0 ( ), a < 0, , ( ). . a > 0 , a < 0 .
y = ax 2 + bx + c y = ax 2 .
. y = ax 2 + bx + c.
y = ax 2 + bx + c =
. y = a (x a)2 + b, a = , b = .
.
O' (a, b) . ' = '2 'O'', O' (a, b).
:
x ¢ = x a
y ¢ = y b,
' = '2 'O'', O' (a, b).
:
1) O'(a, b),
a = , b = ;
2) ' = '2;
3) < 0, ' .
. y = 2 x2 4 x +1
:
y = 2(x 2 2 x +1) 1 = 2(x 1)2 1.
1) ' (1; 1) ;
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2.
. . , .
k, .
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, , V , pv = st. S t v, .. .
k (k ¹ 0) , .
. , = 0. k > 0, , k < 0 . .
k > 0, 2 > 1, 2 < 1. , , .
k < 0, 2 > 1, .
, , , . I . , , ( 0, 0) ' ( 0, 0). , . ' . . III .
II IV . . 1 ( ) ( ).
( ), , . . ( ), , . . , , .