I Tavi

I
Tavi
40
1 ∇ 2
3 ∇ 2
2 ∇ 1
sxva moqmedeba
Tema
Cven ukve gavecaniT ricxvebze sxvadasxva moqmedebebs: Sekrebas,
gamoklebas, gamravlebas, gayofas da axarisxebas. es operaciebi
Sesabamisi simboloebiTaa aRniSnuli
k-
jer
k
6444 7444 8 6 47 4 8
magaliTad, a + a + a + a ≡ 4a, a + a + ... + a ≡ ka, a · a · ... · a k ≡ a .
ra Tqma unda, SesaZlebelia, rom ricxvebze ganisazRvros kidev
raime axali moqmedeba.
magaliTad, Tu a ◊ b simboloTi aRvniSnavT Semdeg moqmedebas:
a ◊ b = ab + a.
maSin 7 ◊ 5 = 7·5 + 7 = 42, xolo 5 ◊ 7 = 5·7 + 5 = 40.
1. Tu a • b = a 2 + b 2 , maSin
a) 3 • 5 = b) 2 • 3 = g) 7 • 1 = d) 0 • 5 =
2. SeamowmeT 1-el magaliTSi ganmartebuli moqmedebisTvis sruldeba
Tu ara:
a) a • b = b • a; b) a • (b • c) = (a • b) • c.
moiyvaneT Sesabamisi magaliTebi.
3. Team a da b ricxvebisTvis axali moqmedeba gansazRvra da man es
magaliTebze aCvena:
1 2 = 5 2 2 = 6
3 1 = 5 4 2 = 8
SeecadeT, gamoicnoT, Tan CaweroT, Tu rogor gansazRvra
Team a b moqmedeba.
4. moifiqreT axali moqmedeba. SeadgineT cxrili ricxvebze
moqmedebaTa SedegebiT. gacvaleT miRebuli cxrilebi
da CawereT megobris mier gansaz Rvruli moqmedeba nebismieri
a da b ricxvebisTvis: „a ∇ b = ..........“.
5. amoxseniT gantoleba:
a) x • 2 = 23;
Tu a • b = 3a + 4b.
b) 5 • x = 19; g) 3 • 7 = x + 11.
2a + b
6. a • b =
a − b
gamoTvaleT:
a) 4 • 2; b) 3 • 0; g) 5 • 4.