Question

VA ROG mult subpunctul d) de l-am 17!!!

Answer 1

Răspuns:

Explicație pas cu pas:

$D=\dfrac{1}{log_2(1*2*...*x)}+ \dfrac{1}{log_3(1*2*...*x)}+...+\dfrac{1}{log_x(1*2*...*x)}=\\=\dfrac{1}{log_2x!}+\dfrac{1}{log_3x!}+...+\dfrac{1}{log_xx!}=log_{x!}2+log_{x!}3+...+log_{x!}x=\\=log_{x!}(2*3*...*x)=log_{x!}x!=1$

Deci, D nu depinde de x.