Logaritma

Operasi aritmetik

Penambahan (+) ${\displaystyle \scriptstyle \left.{\begin{matrix}\scriptstyle {\text{sebutan}}\,+\,{\text{sebutan}}\\\scriptstyle {\text{penjumlah}}\,+\,{\text{penjumlah}}\\\scriptstyle {\text{penambah}}\,+\,{\text{penambah}}\\\scriptstyle {\text{pentertambah}}\,+\,{\text{penambah}}\end{matrix}}\right\}\,=\,}$ ${\displaystyle \scriptstyle {\text{jumlah}}}$ Penolakan (−) ${\displaystyle \scriptstyle \left.{\begin{matrix}\scriptstyle {\text{sebutan}}\,-\,{\text{sebutan}}\\\scriptstyle {\text{penolak}}\,-\,{\text{pentertolak}}\end{matrix}}\right\}\,=\,}$ ${\displaystyle \scriptstyle {\text{perbezaan}}}$ Pendaraban (×) ${\displaystyle \scriptstyle \left.{\begin{matrix}\scriptstyle {\text{faktor}}\,\times \,{\text{faktor}}\\\scriptstyle {\text{pendarab}}\,\times \,{\text{penterdarab}}\end{matrix}}\right\}\,=\,}$ ${\displaystyle \scriptstyle {\text{hasil darab}}}$ Pembahagian (÷) ${\displaystyle \scriptstyle \left.{\begin{matrix}\scriptstyle {\frac {\scriptstyle {\text{dividen}}}{\scriptstyle {\text{pembahagi}}}}\\\scriptstyle {\text{ }}\\\scriptstyle {\frac {\scriptstyle {\text{pengangka}}}{\scriptstyle {\text{penyebut}}}}\end{matrix}}\right\}\,=\,}$ ${\displaystyle {\begin{matrix}\scriptstyle {\text{pecahan}}\\\scriptstyle {\text{nilai bahagi}}\\\scriptstyle {\text{nisbah}}\end{matrix}}}$ Pengeksponenan (^) ${\displaystyle \scriptstyle {\text{asas}}^{\text{eksponen}}\,=\,}$ ${\displaystyle \scriptstyle {\text{kuasa}}}$ Akar ke-n (√) ${\displaystyle \scriptstyle {\sqrt[{\text{darjah}}]{\scriptstyle {\text{radikan}}}}\,=\,}$ ${\displaystyle \scriptstyle {\text{punca kuasa}}}$ Logaritma (log) ${\displaystyle \scriptstyle \log _{\text{asas}}({\text{anti-logaritma}})\,=\,}$ ${\displaystyle \scriptstyle {\text{logaritma}}}$

Logaritma adalah operasi matematik yang merupakan songsangan eksponen atau kuasa.

Rumus asas logaritma:

b^c= a ditulis sebagai log_b a = c (b disebut asas).