Логарифмы

  1. logax=b => ab=x ; a>0, a≠0
  2. aloga x=x, logaa=1; loga1=0
  3. logax=b; x=ab
  4. logab=1/(logba)
  5. logaxy=logax+logay
  6. logax/y=logax-logay
  7. logaxk=k logax (x>0)
  8. logakx=1/k logax
  9. logax=(logcx)/(logca); c>0, c≠0
  10. logbx=(logax)/(logab)