64
log4(16 ) = -9
6
2x2-5x-3
< 0 (-", -1) (2, 3)
x-2 2
43x · 2x+7 = 1
îÅ‚ Å‚Å‚
2 -3 4 0
ïÅ‚ śł
-2 3 0 2
ïÅ‚ śł
ïÅ‚ śł
ðÅ‚ -3 2 2 1
ûÅ‚
-4 2 0 3
46
76
îÅ‚ Å‚Å‚ îÅ‚ Å‚Å‚
-2 3 2 2 -3 0
ïÅ‚ śł ïÅ‚ śł
(-1)1+3 · 4 -3 2 1 + (-1)3+4 · 2 -2 3 2 ûÅ‚
ðÅ‚ ûÅ‚ ðÅ‚
-4 2 3 -4 2 3
f(x) = -x3 + 2x2 - x + 2
-1
3
1
(1, +")
f(x, y) = 2x2 - xy + y2 - x - 5y - 3
(1, 3)
(3, 1)
(3, 1)
f(x, y) = 3x2 + y2 - xy (1, 2)
z - 5 = 2(x - 1) - (y - 1)
z - 5 = 4(x - 1) + 3(y - 2)
z = 4x - 2y - 6

x - 3y = 1
4x + 6y = 2
Å„Å‚
ôÅ‚ x1 + 2x2 + x3 = 1
òÅ‚
3x1 + x2 + x3 = 3
ôÅ‚
ół
-x1 - x2 + 3x3 = 0

2x1 - x2 - x3 = 1
x1 - 2x2 - x3 = 2
îÅ‚ Å‚Å‚

2 3
1 3
ïÅ‚ śł
A = -2 2 B = C = A · B
ðÅ‚ ûÅ‚
2 -1
1 4
C
c11 = 7
c32 = -1
loga(bc) = loga(b) + loga(c)
abac = ab-c
f (x) > 0 x " (a, b) f(x) (a, b)
an a15 = 49 an+1 = an + 4
a1 = 6
a20 = 69
30
ai = 979
i=20
1
(ln(x) · (4x2 + 3x - 1)) = (4x2 + 3x - 1)
x
2
8x2-24x+21
(2x -3x) =
4x-3 (4x-3)2
((2x3 + 4x2)4) = 4(2x3 + 4x2)3(6x2 + 8x)