Friday

March 27, 2015

March 27, 2015

Posted by **John** on Sunday, September 12, 2010 at 6:28pm.

20/1+x^2

- Math -
**MathMate**, Sunday, September 12, 2010 at 6:54pmI assume you mean

f(x)=20/(1+x²)

Parentheses are important when posting mathematical formulas because with multiplication/division taking precedence over addition and subtraction, the posted function would not be very meaningful.

The domain of a function means the values that x can take up, which in this case, is ℝ (= all real numbers).

The range of a function is the range of values f(x) can take up for any possible values of x.

In this case, the maximum is when x=0, which gives f(0)=20.

The minimum is lim x->∞ f(x)=0.

Therefore the range of the given function is

]0,20], or altrenatively, (0,20] in interval notation.

**Answer this Question**

**Related Questions**

Math Rational Functions-Please Clarify =) - I have a question about the rational...

Algebra - 23. The ___ axis represents the independent variable. X? 21. Name the ...

Math - Some rational numbers are integers. True or false The radius of a circle...

Math - True or false Some rational numbers are integers. The radius of a circle ...

calcius - Determine whether the relation represents a function. If it is a ...

Math - For the given functions, write the rational function, r(x) = [f(x-h)-f(x...

Gr.11 - Rational functions graphing. - 1. Identify a rational function whose ...

precal - Create a rational function that has a polynomial function that is ...

math - Suppose you have a rational function that its denominator is (X-c) and ...

11th grade maths - A.give an example of a function whose domain is {3,4,7,9}? ...