Sievennä lauseke (1/(a-1))*(a-1/a)
[ad]
a-1/a=(a*a-1)/a=(a^2-1)/a
((a^2-1)/a)*(1/(a-1))=(a^2-1)/((a-1)*a)
a^2-1=(a-1)(a+1)
(a^2-1)/((a-1)*a)=((a-1)*(a+1))/((a-1)*a)=(a+1)/a
Eli vastaus (a+1)/a tai sitten 1+1/a
Practical Natural Language Processing
Sievennä lauseke (1/(a-1))*(a-1/a)
[ad]
a-1/a=(a*a-1)/a=(a^2-1)/a
((a^2-1)/a)*(1/(a-1))=(a^2-1)/((a-1)*a)
a^2-1=(a-1)(a+1)
(a^2-1)/((a-1)*a)=((a-1)*(a+1))/((a-1)*a)=(a+1)/a
Eli vastaus (a+1)/a tai sitten 1+1/a