Question #264279

In each of the following functions determine it's





A.domain





B.range





C.x-intercept





D.zeroes





E.vertical asymptote





1y=log5(x-1)+3





2.y=log(3x-2)

1
Expert's answer
2021-11-12T08:10:48-0500

It is Assumed the logarithm given are to base 10.


y=log5(x1)+3y=log5(x-1)+3


it's Domain


For the log to be positive x>1x>1

(1,)(1,\infin)


Range


All real numbers

(,)(-\infin,\infin)


x-intercept

log 5(x1)+3=05(x-1)+3=0

log5(x1)=3log5(x-1)=-3

5x5=0.0015x-5=0.001

x=1.0002x=1.0002


(1.0002,0)(1.0002,0)


Zeros


At y=0y=0

x=1.0002x=1.0002



Vertical Asymptote

For 5(x1)>05(x-1)>0

x>1x>1

Asymptote is x=1x=1


y=log(3x2)y=log(3x-2)


Domain

For log to be positive 3x2>0    x>233x-2>0\implies\>x>\frac{2}{3}

(23,)(\frac{2}{3},\infin)


Range


All real values

(,)(-\infin,\infin)


x-intercept

log (3x2)=0(3x-2)=0

3x2=13x-2=1

x=1x=1

(1,0)(1,0)


Zeros

For y=0,x=1y=0,\quad x=1


Vertical Asymptote

3x2>03x-2>0

Vertical Asymptote is x=23x=\frac{2}{3}


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