cricecrice5794 cricecrice5794
  • 14-10-2019
  • Mathematics
contestada

if mx=x+5/x-1 and n(x) = x – 3, which function has the same domain as (m*n)(x)


A.h(x)=x+5 / 11

B.h(x=11/ x - 1

C.h(x)=11/ x - 4

D.h(x)=11/ x - 3

Respuesta :

nuuk nuuk
  • 15-10-2019

Answer:c

Step-by-step explanation:

Given

[tex]m\left ( x\right )=x+\frac{5}{x-1}[/tex]

and [tex]n\left ( x\right )=x-3[/tex]

m of n is given by replacing x in [tex]m\left ( x\right )[/tex] by x-3

[tex]m\left ( n\left ( x\right )\right )=x-3+\frac{5}{x-3-1}=x-3+\frac{5}{x-4}[/tex]

[tex]m\left ( n\left ( x\right )\right )[/tex] can take any value of x except x=4 because at x=4 function is not defined

and [tex]h\left ( x\right )=\frac{11}{x-4}[/tex] is also not defined for x=4 and can take any value of x

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