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how to find the domain of a fraction

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From Yahoo Answers

Question:g(x)= absolute value of x-1/ x-1 The denominator isn't in the absolute value part. How do you find the domain and range of it??

Answers:Domain = R\ {1} Range = { 1, -1}

Question:hello, I am have trouble solving f(t)=-11/(square root of t), I would like to find the domain and range of the function. sorry, i couldn't write the sign. please help me, I thought the domain is zero to positive infinity but what about the negative sign. I also need the range too. Thanks

Answers:Domain a) bottom of the fraction cannot be zero b) argument of square root has to be positive or zero Domain (0,infinity) Range a) bottom of fraction is positive Range (-infinity,0)

Question:I don't really understand how to find range. I think for the domain you set the equation equal to 0 and solve but I'm not positive. How would I find the domain and range of this problem? f(x) = sqr rt (4 - 2x) Thanks

Answers:for domain, it is basically the restrictions of what X can be. you would only set the equation to 0 if it was a fraction and the equation was on the bottom. and it shouldn't be asking you for range with that sort of problem. basically domain is the "x"s and range is the "y" values that fit in that function. Good luck oh so the domain for that function would be all reall numbers

Question:If the vertex is point (7,9) and the end points are points (6,8) and (8,8), how would you write the absolute value equation for this? Also, since there are endpoints to this absolute value, how would I describe or write the domain for this absolute value function. The absolute value function that I got for this function is y = - I(x- 7)I + 9 y equals neg (absolute value of x-7) plus nine

Answers:Your equation looks correct to me. The domain is the possible x values, namely 6 <= x <= 8

From Youtube

Finding the Domain and Range of a Piecewise Function :Finding the Domain and Range of a Piecewise Function - In this example I show how to find the domain and range of two previously graphed piecewise functions. For more free math videos visit PatrickJMT.com

Int Algebra: Finding Domain and Range :www.mindbites.com This lesson is part of a series: Intermediate Algebra While a function always satisfies the vertical line test (for any value of x there is only one value of y), there are functions in which the domain of the function does not include all values of x. In this lesson, we look at the domain of a function (all of the values of x for which we can evaluate the function and find a value of y) and the range of a function (all the values of y that may be generated by evaluating the function for some value of x). In addition to learning about evaluating a function to find the domain and range, Professor Burger will graphically show you how to identify the domain and range.Taught by Professor Edward Burger, this lesson was selected from a broader, comprehensive course, Intermediate Algebra. This course and others are available from Thinkwell, Inc. The full course can be found at www.thinkwell.com The full course covers real numbers, equations and inequalities, exponents and polynomials, rational expressions, roots and radicals, relations and functions, the straight line, systems of equations, quadratic equations and quadratic inequalities, conic sections, inverse and exponential and logarithmic functions, and a variety of other AP algebra and advanced algebra.