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HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Hawkes Learning Systems: Developmental Mathematics Section 14.7: Functions with Radicals

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Review of Functions and Function Notation A relation is a set of ordered pairs of real numbers. The domain D of a relation is the set of all first coordinates in the relation. The range R of a relation is the set of all second coordinates in the relation. A function is a relation in which each domain element has exactly one corresponding range element.

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Review of Functions and Function Notation Vertical Line Test If any vertical line intersects the graph of a relation at more than one point, then the relation is not a function.

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Finding the Domain and Range of Radical Functions Radical Function A radical function is a function of the form in which the radicand contains a variable expression. The domain of such a function depends on the index, n: 1.If n is an even number, the domain is the set of all x such that 2.If n is an odd number, the domain is the set of all real numbers,

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Finding the Domain of a Radical Function

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Finding the Domain of a Radical Function

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Graphing Radical Functions Domain: Range:

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Graphing a Radical Function Domain: Range:

HAWKES LEARNING SYSTEMS math courseware specialists Copyright © 2011 Hawkes Learning Systems. All rights reserved. Graph a Radical Function Domain: Range: