. t. , ..
, ,
= 2arctg t, ,
= , .
, , . , .
R(u (x), v (x)) (), R( u, v) = R(u, v);
R(u (x), v (x)) v (), R(u, v) = R(u, v);
R(u (x), v (x)) (), R( u, v) = R(u, v);
R(u (x), v (x)) v (), R(u, v) = R(u, v);
R( u, v) = R(u, v), R(u (x), v (x)) u v.
) R (sin x, cos x) sin x, R 1(cos x)sin x, cos x = t:
= .
) R (sin x, cos x) cos x, R 1(sin x)cos x, sin x = t:
= .
) R (sin x, cos x) sin x cos x, R 1(tg x) R 2(tg x), tg x = t ctg x = t :
=
= .
.
1.
1) . :
2) . , sin x. ,
R (sin x, cos x) = = R (sin x, cos x),
, t = cos x:
.
3) . , sin x cos x:
,
t = tg x.
.
) , :
), ), ), .
) , ,
.
2.
1)
2) .
3) .
, , , .