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, , . , x = 0 y = x^3 , .
, , . , , . ,
.
y=f(x) [a,b]. , [a,b], .
:
- , [a,b]
- a b
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:
x(n) ( ), .
x(n) (), X(n + 1)> Xn(X(n + 1)< Xn) .
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{Xn} - , . {Xn} - , .
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= ,
f ( + 0), f ( 0) , = .
= k + b f() , :
f () = k + b + a (), .
a () () .
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:
k=0 . 2.), kx=0, , .
. . , .
, . x + iy, x y , i .
z x + iy, x, yR, .
, , ( , i2 = − 1):
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(a + ib) + (c + id) = (a + c) + i(b + d);
( ) - (, , , , ).
z |z| |z|=√(x^2+y^2). r p. z , |z| .
z = x+iy, z = x-iy ( ) z ( z *). . , , .