X = 4; y = 1/2ˣ = 1/2⁴ = 1/16;
x - 10y + 10 = 4 - 10 · 1/16 + 10 = 4 - 10/16 + 10 = 64/16 - - 10/16 +160/16 =(64 -10 +
+ 160)/16 = (54 + 160)/16 = 214/16 = 13/8
1/㏑13/8(1/(2^13/8) - 1) = 1/1,625(⁸√2¹³ - 1) = 1/1,625((⁸√2⁸ · √2⁵) - 1) = 1/1,625((2 ·
· √36) - 1) = 1/1,625((2 · 6) - 1) = 1/1,625(12 - 1) = 1/1,625 · 11 = 11/1,625 = 11 ÷ (1 + 625/ /1000) = 11/1 ÷ 1625/1000 = 11/1 · 1000/1625 = (11 · 1000)/1625 = (5,5 · 1000)/812,5= = (1,1 · 1000)/162,5 = (1,1 · 200)/32,5 = (1,1 · 40)/6,5 = (1,1 · 8)/1,3 = (1,1 · 4)/0,65 =(1,1 · · 2)/0,325 =(1,1 · 1)/0,1625 = 1,1/0,1625 = 0,22/0,325 ≈ 0,67692307692 ≈ 0,6769 ≈ ≈ 0,7 ≈ 1