Question

Dau 100 de puncte pentru cele 2 ex.​

Answer 1

7.a.n < 5 =>n apartine multimii{4,3,2,1,0}x=4=>n+1=4=>x=4×4+1=>x=16+1=>x=17n=3=>x=4×3+1=>x=12+1=>x=13n=2=>x=4×2+1=>×=8+1=>×=9n=1=>x=1×2+1=>×=2+1=>×=3n=0=>×=0×2+1=>×=0+1=>×=1S(multimea solutiilor)={17,13,9,3,1}b.n<4=>×=2 la puterea ,,n"+3=>n={3,2,1,0}n=3=>×=2la puterea 3+3=>×=8+3=11n=2=>×=2la puterea 2+3=>×=4+3=7N=1=>×=2la puterea 1+3=>×=2+3=>×=5etc...lene