\(\frac{\text{d}}{\text{d}x}(\log_a(u))=\frac{1}{\ln(a)u}\frac{\text{d}u}{\text{d}x}\)
\(\frac{\text{d}}{\text{d}x}(u^n)=n u^{n-1}\frac{\text{d}u}{\text{d}x}\)
試問誰還未發聲
\(\frac{\text{d}}{\text{d}x}(\log_a(u))=\frac{1}{\ln(a)u}\frac{\text{d}u}{\text{d}x}\)
\(\frac{\text{d}}{\text{d}x}(u^n)=n u^{n-1}\frac{\text{d}u}{\text{d}x}\)