, .
. ,
f() = f().
,
f() = f().
, : = 2; = cos ;
: = 3; = sin .
= 3 3 2 , . ,
f ( ) = ( )3 3( )2 = 3 3 2 ¹ f ()
f ( ) = 3 3 2 = ( 3 + 3 2) ¹ f ().
, , .
. = f() , 1 2 1 < 2 É f(1) < f(2).
= f() , 1 2 1 < 2 É f(1) > f(2).
, , , .
, = 2 (¥; 0] , [0; +¥) . , , (¥; +¥) = 2 .
. = f(), D , , ¹ 0, :
1) Î D, + Î D Î D;
2) Î D f( ) = f().
.
: , , Î Z . .
.
. , = k + b, k b .
:
1. D (y) = ( ∞; + ∞) = R .
2. E (y) = ( ∞; + ∞) = R .
3. f (- x) = k ( x) + b = k x + b, f (x) = (k x + b) = k x b
f (- x) ¹ f (x), f (- x) ¹ f (x), , .
4. k >0, ;
k < 0, ;
k = 0, .
, k b.
b: b ( ) .
. k . , .
|
|
k = tqa
a a
, .
, , ..
y = x × z. x z , , z = k, y = kx. , y x; k .
x y,
y = kx .
b = 0.
. , y = kx, k , 0, , .
:
1. D (y) = R = ( ∞; + ∞) R.
2. E (y) = R = ( ∞; + ∞) R.
3. f (- x) = k ( x) = kx = f (x), , .
4. k > 0, .
k < 0, .
1-5 , . .
1. y x, (x,y), (0,0), k.
2. , x y, ..
.
x y , :
() x y () ( ).
.
k > 0 k < 0
0 0