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Radu123423542345
a fost răspuns

Calculati:
A)1000+1supra1000+2supra1000+3supra1000+....+999supra1000
B)1000-1supra1000-2supra1000-3supra1000-.........-999supra1000



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Răspuns :

Alitta
A)   1000+(1+2+...+999):1000=1000+(999*1000:2 /1000)=1000+999*500:1000=1000+499,5=1499,5

B)    1000 - [(1+2+...+999):1000]/1000 =1000 - [(999*1000:2)/1000]=1000 - 499,5=500,5

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