Question

Va rog macar unul din cei trei logaritmi. Aveti atasat care sunt.

Answer 1

Salut,

$\left(log_3(3x)\right)\ '=\dfrac{(3x)\ '}{3x\cdot ln3}=\dfrac{3}{3x\cdot ln3}=\dfrac{1}{x\cdot ln3}.$

$(ln(x+1))\ '=\dfrac{(x+1)\ '}{x+1}=\dfrac{1}{x+1}.\\\\(ln(3x^2))\ '=\dfrac{(3x^2)\ '}{3x^2}=\dfrac{6x}{3x^2}=\dfrac{2}{x}.$

Ai înțeles ?

Green eyes.