Page 20 - Math Grade 11 (Basic)

PROEUS DARA

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3. U 7 = , U 13 = :2 '1 firwl2l U 0 '1
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fi. U2 = -12 , s12 = 18 '1 firwl2l ul , d @~ u6 '1

7. tfi§H~612t12 2, 7, 12, ... @~rd612t12 2, 5, 8, ... '1
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8. 'lii:llmttln561 (U") tt:lrn'i:ll2619 n Firwlrittllru U 11 = - 2n + 3 thn561Glt12tn2 '1
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111 "'-.!> () u 4 () tl ~
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9. tfi§~umcr2 2th rd612 n 2 '1 fi rwl2lG 2 2 il~ (; 2l g btl[fi ~~ttl d rn'lintH rdS~ 125 ttfi ru
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dru'lintl~6l~'li~trds~ 38 '1
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1428 '1

Fi. 2+4+6+ ... + 146 2. 100 + 95 + 90 + 85 + ... -20 '1
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fi. - 193 - 189 - 185 - . . . 21 - 17 'li5. 54+ 42 + 34 + ... - 3 '1

13. ~n~8n~~fid~~mfi~ml:3~"a A Li12G¥1ru 1s ~9J&'~61Q~ 1 &~ '1 Lm't~tLAlru'i:3n &'915
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'li~W"tD'lirn2 25 ~:niH r:tfiru~:i'9riaD'lirns 27 tnlH
~a9litD'lirn2 29 tnlH '1 tr:ltDmn1Hm'i:3ruil
25 tnlH
21~trnaUlG'it:~ruoa21~t~filru '1 firwl2ltn1H
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15