# Some true and false questions!

• Jul 10th 2010, 01:00 PM
RBlax
Some true and false questions!
1: f(x)=e^x is an example of f(x)=b^x, where b is a positive number
True or False

2: Given the graph of the exponential function f(x)=b^x for which the base, b, is greater than 1. The function f is a one-to-one function.
True or False

3:f(x)=log3x is the inverse of g(x)=x^3.
True or False

4:Given the graph of the exponential function f(x)=b^x for with the base, b, is greater than 1. The range of f is y>=0
True or False
• Jul 10th 2010, 01:25 PM
skeeter
Quote:

Originally Posted by RBlax
1: f(x)=e^x is an example of f(x)=b^x, where b is a positive number
True or False

2: Given the graph of the exponential function f(x)=b^x for which the base, b, is greater than 1. The function f is a one-to-one function.
True or False

3:f(x)=log3x is the inverse of g(x)=x^3.
True or False

4:Given the graph of the exponential function f(x)=b^x for with the base, b, is greater than 1. The range of f is y>=0
True or False

what are your thoughts?
• Jul 10th 2010, 01:27 PM
RBlax
1=true
2=false
3=true
4=true

I'm asking so I can get my crap straight.
• Jul 10th 2010, 01:31 PM
skeeter
Quote:

Originally Posted by RBlax
1=true
2=false
3=true
4=true

I'm asking so I can get my crap straight.

well, you only got one of them correct.
• Jul 10th 2010, 01:32 PM
RBlax
So 1 & 3 is false.

2 & 4 is true correct?

I'm on here asking for help to understand these questions. Thanks for you help =)
• Jul 10th 2010, 01:41 PM
skeeter
Quote:

Originally Posted by RBlax
1: f(x)=e^x is an example of f(x)=b^x, where b is a positive number
True or False

2: Given the graph of the exponential function f(x)=b^x for which the base, b, is greater than 1. The function f is a one-to-one function.
True or False ... do you understand what a one-to-one function is?

3:f(x)=log3x is the inverse of g(x)=x^3.
True or False

the inverse of x^3 is x^(1/3)

the inverse of log(3x) is b^(3x) , depending on the base, b,of the logarithm.

4:Given the graph of the exponential function f(x)=b^x for with the base, b, is greater than 1. The range of f is y>=0
True or False

for b > 0 , f(x) = b^x can never equal 0

...
• Jul 10th 2010, 01:43 PM
RBlax
I'm trying to learn it that's what I'm asking