Question

rezolvați in R ecuațiile logaritmice .log(2x-1)=4​

Answer 1

$\text{Avem formula: } \boxed{\text{log}_{\text{a}}\text{(x)=b} \implies \text{x=a}^\text{b}} \\ \\ \log_{2}(\text{2x }- 1) = 4 \implies \text{2x }- 1 = {2}^{4} \\ \implies \: 2\text{x} - 1 = 16\implies \:\text{2x} = 17 \\ \implies \: \text{x} = 8.5$