jacobgrecco9915
jacobgrecco9915 jacobgrecco9915
  • 01-10-2018
  • Mathematics
contestada

Please help 20 POINTS. Problem below

Please help 20 POINTS Problem below class=

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tramserran
tramserran tramserran
  • 01-10-2018

f(x):  y = 9x² - 12

f⁻¹(x):  x = 9y² - 12

    x + 12 = 9y²

     [tex]\frac{x+12}{9} = y^{2}[/tex]  

     [tex]\sqrt{\frac{x+12}{9}} = |y|[/tex]     ; x ≥ -12

     [tex]+/-\sqrt{\frac{x+12}{9}} = y[/tex]

Answer: C

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