alex673584 alex673584
  • 11-12-2020
  • Mathematics
contestada

log (x-1) + log (x+1)=3
Solve for x

Respuesta :

sofia10206
sofia10206 sofia10206
  • 11-12-2020

log (x-1)/(x+1) = log 10^3 ; [tex]\frac{x-1}{x+1}[/tex] = 1000; x-1 = (x+1)*1000 ; x-1 = 1000x + 1000 ; 999x = -1001 ; x = -1001/999 ; x ≈ -1

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