Leabhar Iomlán - Cogg

4. Is iad 3, 4, 5 na sleasa agus imlíne 12 aonad5. t 2.68 nó t 9.326. x 3 nó x 57. 0.25 soicind nó 1.25 soicind8. 12 cm9. 1, 1 nó 7, 910. 9 cm11. Fad 10 m, leithead 6 m12. 1, 0, 1 nó 7, 8, 913. Leithead 2m14. Fad 24 m, leithead 10 m15. 9.35 m16. t 3, s 5Níl luachanna diúltacha bailí17. (2.2, 2.4); (6.2, 0.4)k 10Cleachtadh 2.51. (a) (i) 9 (ii) 4(b) (i) 2(ii) 5(c) (i) 7 (ii) 2(d) (i) 9(ii) 3(e) (i)7_2 (ii) 1_2(f) (i) 1_7 (ii) 1_710(g) (i) __3 (ii) 2_3(h) (i) 2(ii)1_5. k 953_4 (ii) 5_4√ __3. (i) ___ 335 )x 4 √ __5 0(iii) __ 13__ 252 )2 __ 6542 )2 __ 6142 , 2) (b)(i) (i) 2 (ii) 3( j) (i)2. (a) x 2 3x 1 0(b) x 2 6x 4 0(c) x 2 7x 5 0(d) 3x 2 2x 7 0(e) 2x 2 5x 4 0(f) 2x 2 3x 10 0(g) 12x 2 3x 4 0(h) 6x 2 10x 3 03. (i) x 2 10x 24 0(ii) x 2 x 6 0(iii) x 2 6x 5 0(iv) x 2 (4 √ __(v) x 2 4ax 3a 2 0(vi) 25x 2 25x 6 0(vii) b 2 x 2 5bx 6 0(viii) 10x 2 31x 15 0Cleachtadh 2.61. (i) 196 (ii) 9 (iii)42. (i) (x 4) 2 19 (ii) (x 1) 2 6(iii) (x 1) 23. (i) (x 2) 2 10 (ii) (x 9_(iii) (x 7_4. (i) (1, 7) (ii) (1, 4)(iii) (1_6. 2(x 3) 2 118. (i) (1, 5), (2, 1), (4, 1)(ii) (a) y (x 1) 2 5(b) y x 2 2x 4(a) y (x 2) 2 1(b) y x 2 4x 3(a) y (x 4) 2 1(b) y x 2 8x 179. (i) 3 (ii) 2 (iii)10. Uasphointe (3, 9)Airde is mó 9 n-aonad11. (i) C; y (x 3) 2 1(ii) B; y (x 3) 2(iii) A; y (x 3) 2 1212. Cuar C: y 16 (x 2) ⇒ p 16, a 1, q 22Cuar D: y 4 (x 2) ⇒ p 4, a 1,q 213. f (x) 1_2 x2 11_2 x 9 nóf (x) 9 1_2 (x 1 1_2 )214. f (x) x 2 2x 4 nó f (x) (x 1) 2 315. (i) f (x) 4 (0.1)(x 6) 2(ii) (6 2 √ ___10 , 0) agus (6 2 √ ___10 , 0)(iii) 4 √ ___10Cleachtadh 2.71. (i) 2 √ __2 (ii) 3 √ __3 (iii) 3 √ __5(iv) 10 √ __2 (v) 9 √ __22. (i) 5 √ __2 (ii) 5 √ __2 (iii) 7 √ __2(iv) 5 √ __3 (v) 9 √ __2 (vi) 7 √ __5(ii)(iv) 2 √ __2 (v)√ _____ 22√ _____ 2(iii)1_3√ _____ 224. (i) 4 √ __6 (ii) 30 (iii) 6 2 √ __3(iv) 22 (v) 2 (vi) a 2 4b5. (i) √ __12(3 √ __2 )5 1 (ii) __________7(iii) 9 4 √ __5 (iv)√ _____ 226. (i) 2 (ii) 47. (i) 7 (ii) 12 2 √ __58. (i) 4 √ __2 (ii) √ __62 (iv) 19 8 √ ___________ 31310. 5(2 √ __3 )11. √ __2Cleachtadh 2.81. √ _________2(x 2 4) m2. (a) √ ___14 km(i) 2(4 √ ___14 ) km(ii) 12 shoicind5283