persamaan dan pertidaksamaan nilai mutlak. Kelas 10
268
5817
0

Senior High 10
Mata pelajaran: Matematika wajib.
Sumber: @/claastud on Twitter.
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ページ1:
nilai mutlak nilai mutlak dari kel • bernilai --> + • te bernilai + > + te bernilai o -> 0 eg: 151-5; 1-51=5; 101=0 resika u ≥0 14|<- sina reco eg 1)|24-31 a. 24-3≥0 121-31-2-3 b. 21-30 121-3-(2-3) Jadi =-24+3 Jika 21-320 - 1a1=1a1n 1a1a² la-bl=1b-al (a-b) a+b =b-a eg: la-b-c1 = 1-1 (a-b-c) | √a² = 1a1 eg: Jina = 1-a+b+c | <3, maka nilai dari Je-3) adalah... √14-37² = 14-31 1 2 1-3 Jika 24-3 <0 1<3 4-340 -31=-(-3) = -4+3 2) Jina u<7. maka bentuk yang sama dengan 11-71 adalah... 147 91710 120-71 3-(4-7) = -4+7 sifatnya & la+b=lbtal -la-bl=1b-al √alal - labl = |al|bl 191 = .6% 0 Jallal = eg: | 1-47¯³ | ¸ | (-4)-3| 1-413 1-413 1-413 1-413
ページ2:
eg: |f(u)=19(4)| 1) himpunan penyelesaian 134+5=12+10ladih... L18 (4) 1= 19(2) | (+(1) + 9110)) ((re) - 9 (2)) =0 M Im Ini m² = 0³ m² - n² = 0 n (m+n) (m-n)=0 = (5u+15) (u-5)=0 trik mudah Pertidaksamaan-ny L Bentuk umum: |f(u)) <k |f(2)|>K if() < 19 (1) a<|f(2)|<b 14(2) < K 190171 eg: |f(u)>k dan к>O 54+15:0 or 4-5=0 54-15 U-3 L Ubah ke f(u) < -K // + (4) > K 1) nilai yang memenuhi pertidaksamaan 124-11>4 adalah... 224-1<-4/124-174 +1 =24-3 +1 = 240 >5 = <- Fu> u = 5 {-3.53 eg: <k dan K > 0 Lubah ke-k<+(2)<k 1) nilai u yg memenuhi pertidaksamaan 121-317 adlh... 2-7424-3<7 < +3 +3 =-4<220 <10 2 2 2 =-2<< 5 2) nilai yg memenuhi pertidaksama- an 15-341≤4 adih... 20-(5-34) 2) nilai te yang memenuhi pertidaksamaan |44-3/25 adalah... 2478-3-5 +3 = 44≤-2 14:4 42-325 +3 +3 = 44204 :4 = 134-5154 =-4534-554 +5 153511≤ u≤3 = 3 = eg: flu)>19(1)| Lubah ke (flu)+9(16)) (+ (1)+9(1)) 1) nilai te yang memenuhi pertida- Ksamaan 2-1 | > | 18+4|adih... 2 (3+3)(-5) > 0 masukin o 31-3 u = -1 u = 5 Kesini jadi (0+3)=3+ (0-5)=-5-- L(+) x (-)=- 1=- =422 0 41-7 or 4 75
ページ3:
LATIHAN SOAL ①1-5a² (6-1) (0-1) | 18+1 21-511a11b-11 11+1| a² gimana? a ER (bil.real) -9²≥0 5a1b-11 -1α² 1 = a² = 14+11 Jika diketahui 11a1 +1611² = 10 dan a² + b² = 6, maka nilai dari labl adalah... 1191+1611² = 10 (lalt lb) 10 |a|+2|allbl + 161² = 10 a² + 2 lallbl + b² = 10 a² + 2 labl+b² = 10 6+2labl 10 2labl=4 labl=2 eg: If()=9(e) dengan g(u) 20 1) himpunan enyelesaian ar persa- maan 13+11=4-1 adalah ... +(4)=9(10) 2014(4)1=9(4) f(1)=-9(1) syarat 912) ≥0 trik mudah persamaan n. mutlak If(u) dengan 20 |f(u)1 9 (1) agn 9(u)zo |f(2) = 19(1)| eg: f(u) k dengan k≥0 1) Himpunan penyelesaian dari Persamaan 124-517 adlh... 2|f(2) =<; f(u) = K 124-51=7 f(4)=-k 24-5=7 24-5=-7 24:7+5 24:12 24-7+5 24=-2 11=6 1=-1 1-1.63 134+11=42-1 34+1=44-1 34+1 (4-1) 31-410=-1-1 -4=-2 u = 2 31+1=-4+1 34+44-1-1 74=0 Lsyarat: 44-130 1 = 0 4421 14≥1 99 memenuhi {2} 4
ページ4:
2) nilai te yang memenuhi pertidak- samaan 21-11 |+2| adlh ... 12-21 ≤+2) -> masukin 2 (3)(-4)≤0 1:0 2=4 (3.2)=6->+ (2-4)=-2-7- L (+) (-)=- + + O 2 4 05454 *Kalo perkalian 2 faktor spt ini, tanda (+) (-) pasti berubah. eg: |f(u)] < K 1914)1 Lubah ke If (10) <k|9 (2) | |f() < | K. 9(4)| [f(u)+kg()][f(u) - kg (u)] < 0 K Syarat: 9(4) 0 1) nilai yang memenuhi pertidaksa- Maan 120+71 21 adalah... 12-11 2012 +71 ≤ 1.12-11 12711-11 (316) (+ 8 ) ≤ 0 4=-6 1=-8 3 u = -2 L> 3.0+ 6 = 6 (+) 0 +8 = 8 (+) eg: a<|f(r)|<b Lubah ke a<flue) <b atau - b<flue) <- a 1) nilai yang memenuhi Pertidaksamaan <1-2<3 adalah... 201≤ 4-2 <3 11-344-24-1 +2 +2 3<<5 or -144641 2) nilai yang memenuhi pertidaksamaan 0 <124-11<5 adalah... 20< 2-1< 5 //-5 <24-1<O 1424452 =-4<24<12 << or -2<< 2) nilai yang memenuhi Pertidaksamaan | 1+2) adalah... 11-21 + 213.11-21 1+213-61 > 3 (4-4) (-2+ B ) > 0 (44-4)(24-8) <0 1=4 u = 4 + + L (+) (+) = + + + -8 -2 0 1-170 171 -8≤4≤-2 1-240 1<1<2 or 272 24114 00
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