Question

Cum se rezolva S=1+2 la p 1+2 la p 2+2 la p 3+.....+2 la p 100

Answer 1

$S=1+2 ^{1} +1+2 ^{2}+1+ 2^{3} +.........1+2 ^{100}$
S=(2la1+2la2+2la3+......+2la100)+1*100
S=2la100+2la100-2la1+100
S=2la101-2+100
S=2la101+98