Question

Observe os conceitos iniciais de logaritmo e calcule:
a) log2 4

Answer 1

$\boxed{\begin{array}{l}\underline{\rm D~\!\! efinic_{\!\!,}\tilde ao~de~logaritmo}\\\sf \ell og_ba=x\iff b^x=a,\begin{cases}\sf a>0\\\sf b>0\\\sf b\ne1\end{cases}\end{array}}$

$\boxed{\begin{array}{l}\sf\ell og_24=x\\\sf 2^x=4\\\sf 2^x=2^2\\\sf x=2\end{array}}$