x =x(s), y =y(s), , s M0 M(x, y). s=0 M0. f.
f C. . , : , .
xy x= , y= , , , - , , .
= (1.16)
.
1. y=y(x), , y(x) [a,b],
= . (2.16)
2. , ,
= . (3.16)
3. , x= , y= , z= , = (4.16)
15.1. : , - , .
. ? . . , : x=acos t, y=bsin t, .
x= - a sin t, y= bcos t. (1.16).
= = = = = = = = = .
15.2. : , .
. , : , . . , . , . = .
15.3. : , (0, 0), (4, 0), (4, 2), (0, 2).
. 24
15.4. : , , .
..
. AB x= , y= , . A=A(, ) B= B(, ). P=P(x, y) Q=Q(x, y) AB. - AB M(x, y), - , M(x, y) Ox. = .
|
|
AB , = = . (5.16)
y=y(x), , y(x) [a,b],
= . (6.16)
C - R3, x= , y= , z= , , =
15.5. : , AB , A(0; 0), B(1; 1) y= x2.
. y= x2 y=2x. (6.16)
= = .
15.6. AB, A(3; -4), B(1; 2): .
. AB . y= -3x +5. (6.16)
= =8.
15.7. : .
. (5.16) x, y, z t.
.
= = =
= = = =0.
15.8. , A B: x2+y2=a2, , A(0;-a), B(0;a).
. , y x, ,
(6.16). . . , , . , . ( A) ( B). (5.16):
= .
. G - . , P, Q, , , = , , G .
15.9.
1) , - ;
2) , - .
. = .
1) P= -x2, Q = xy2. , .
= . , = = .
:
15.10. : , (1;0), (0;1), (-1;0), (0;-1). : 0