#20 & #22
#20
the correct answer for the domain f(x)=ln((x-1)/x)) is b (-∞,0) union (1,+∞) because when x is within the first set (two negative numbers) the result is positive and within the domain of natural log, and the equation is also within the domain for natural logs when x is in the second set.
#22
e^(-ln(x))=1^(-x) [because the e and ln cancel each other out]=1/x
the correct answer for the domain f(x)=ln((x-1)/x)) is b (-∞,0) union (1,+∞) because when x is within the first set (two negative numbers) the result is positive and within the domain of natural log, and the equation is also within the domain for natural logs when x is in the second set.
#22
e^(-ln(x))=1^(-x) [because the e and ln cancel each other out]=1/x
posted by Anonymous at 9:25 PM
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