Posted by **andy** on Thursday, September 23, 2010 at 2:06pm.

the equation is f(x) = (1/sq. root of 1-x^2)

1. f(x) is never zero.

2. 0 is in the domain of f

3. All negative real numbers are in the domain of f

4. All positive real numbers are in the domain of f

5. 1 is in the domain of f

6. f(x) is never negative

7. f(x) is never positive.

which of these are true or false?

i think it is

1. T

2. T

3. T

4. T

5. T

6. F

7.T

- math -
**MathMate**, Thursday, September 23, 2010 at 4:12pm
To answer these questions, you need to find the answers to two questions:

1. what is the domain of f(x), and

2. what is the range of f(x).

To find the domain of f(x), you will observe what values of x will render f(x) undefined (±∞, etc) or complex (i.e. square-root of a negative number).

Armed with the results, you can then check them against your answers, the majority of which are, unfortunately, incorrect.

## Answer this Question

## Related Questions

- algebra - the equation is f(x) = (1/sq. root of 1-x^2) 1. f(x) is never zero. 2...
- Pre-calculus - Can somebody help me wit this? Find the range and the domain of: ...
- Algebra - The function 5x^2+2x-1's domain is all real numbers, according to the ...
- math 116 - What is the difference between domain and range? The domain of a ...
- Math Algebra 1111 - If the domain of a function F is the set of all real numbers...
- Algebra - 13. Find the domain of y=2x+1 Bobpursley said: The domain of x is not ...
- maths - what is the largest domain of the following functions f(x)=3x-5 f(x)=...
- domain - Find the domains of f and f' 1, f(x) = xe^x 2. f(x) = x^(3/5) 3. f(x...
- algebra - Find the domain and range of the function. 1. f(x)= x^2-x I got: ...
- Discrete Math - Determine the domain and range of: y = 5 – [1/ (1 + x)] So, ...

More Related Questions