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Unformatted text preview: k = f + g Ā· g ; give its domain in interval notation. Write a simpliļ¬ed formula for the function k = ( f + g ) ā¦ h ; give its domain in interval notation. 4. A rectangle is fashioned so that its area and perimeter have the same numeric value. Write the length ā of the rectangle as a function of the width w . What is the only square that behaves this way? 5. A company manufactures a gutter by bending up the sides of a metal sheet of ļ¬xed width w = 2 ft, so that crosssections form an isosceles trapezoid with desired length b = 1 ft for the smaller base as shown. Express the crosssectional area as a function of the angle Īø . For fun, experiment with a calculator to try to decide what Īø maximizes the crosssectional area....
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 Spring '08
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