Ł
"
cos x
(4p)
dx
1 + x
0
1 1
(4p)
exp(x) dy dx
y
0 x
(2p)
4x2y2 (8p)
D = (x, y) " R2 : 0 < y < x, |x4 - y4| <
(x2+y2)2
(4p)
y = cosh(x) -1 d" x d" 1
(10p)
f(x, y) = x3 + xy2 - x2 - y2 x2 + y2 d" 1
F ć%dn S
S
(4p)
-1 d" x, y, z d" 1 n F (x, y, z) = (-x + y, y - z, 2z)
(4p)
f (t) + t2f(t) = t2 f(0) = 0