Rit þess (konunglega) íslenzka Lærdómslistafélags - 09.01.1785, Page 3

Rit þess (konunglega) íslenzka Lærdómslistafélags - 09.01.1785, Page 3
S B. llm ffiruuriftT7afFinur. 195 teltintfir ttibr t frtg<]ta taltta regtu á |>eiina fiatt: 5 — 1 — joo : p°- = 100; og í»arf jjpt 100 U. frapt ttl at ftatíba fu'tnganttm ft)vr= imt á jkfjtim jtatlatiba. SfntOict fpurntngitt er: at gcfnum fu'tnganum, fraptinum cg fícrb fiattanÐanð, at finna £pat tángr 6ann parf at pera? ‘Jií at foara uppá £ejsa fpurmngtt, beili eg fprrfogöum jofuttbi ttieb fraptinitnt P, og pctbr ^tutoc-tatan L=Qji, fmt er: tit at ftnna fengbina, fíaf margfattba fi'pngbs ina tneb ftceb ftafíatibanð, og beifit jtot át; forntta rneb fraptiniitit. íil at uppt'pfa jterta meb ábrfogbuttt teluttt, fet eg fcer foo ttibr í fjlutfallð reglttna: 100—500—1: 1 ’°° = ), og jr'al j»Pt jjaílanbititt pera 5 feta tángr. @á ftót'Oa og fcbajta fpurntttg er: at gefn= unt fraptinum, f>ánganum og fengb fiattanbí ottð, at ftttna, ftpat ftátt f>attn ftarf at rífa? Hl at fpara jjcfiari fpurntngu, bciti eg ábr« greitibum iefnttbi ttteb fánganttm (9, og perbr jþtutar-taíati fepi: h = PI, fjat cr: ut at ftiirta "qT fsceb (jaítanbanð, jTat margftetga fraptinn nteb lengbinni, og beita j>rí átfomna nteb jjfyngbinni. ^bejnt til ttpplpfttigar, fet eg tot5 ur í flab bóf'ffafattna á jjcnnann ftátt: 500 — 100 — 5 : -~2| = j, 0g jPaí fpt hattanbj ittn rtfa unt 1 fct. ííítar fcfar ártaufnir ttá einnittti fteint, fegar fraptrittn fcsrir fáng- 2fl 2 ann
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Rit þess (konunglega) íslenzka Lærdómslistafélags

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