Friday

November 21, 2014

November 21, 2014

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

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 4:12pmTo 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...

Algebra - The function 5x^2+2x-1's domain is all real numbers, according to the ...

Pre-calculus - Can somebody help me wit this? Find the range and the domain of: ...

math 116 - What is the difference between domain and range? The domain of a ...

domain - Find the domains of f and f' 1, f(x) = xe^x 2. f(x) = x^(3/5) 3. f(x...

Math - i^6 = (i^2)^3 = (-1)^3 = -1 The square, not the square root of -1 is 1...

Discrete Math - Determine the domain and range of: y = 5 – [1/ (1 + x)] So, ...

algebra - Find the domain and range of the function. 1. f(x)= x^2-x I got: ...

maths - what is the largest domain of the following functions f(x)=3x-5 f(x)=...

Algebra 1-- Please, check my answers! - 1. What is ((-12x^6 + x)) / ((-4x^2))? ...