1310-Notes-Sec-28 - Math 1310 Class Notes Section 2.8, Page...

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Unformatted text preview: Math 1310 Class Notes Section 2.8, Page 1 of 5 Math 1310 Section 2.8 Absolute Value In this lesson, youll learn to solve absolute value equations and inequalities. Evaluating with absolute value Example 1: Evaluate 3(1 7 ) x- when x = 3. Absolute value equations Next, well look at absolute value equations. You can use this rule: for any positive C, C x = implies C x = . If C is negative, then there is no solution. If C = 0, then x = 0. Example 2: Solve for x : 8 = x Example 3: Solve for x : 3- = x Example 4: Solve for x : 12 5 = + x Math 1310 Class Notes Section 2.8, Page 2 of 5 Example 5: Solve for x : 15 5 2 = +- x Example 6: Solve for x : 12 1 3 =- x Example 7: 5 2 3 1 11 x- +- = - Example 8: Solve for x : 3 8 1 3 = + + x Math 1310 Class Notes Section 2.8, Page 3 of 5 Absolute value inequalities Next, well look at inequalities. The approach to these problems will depend on whether the problem is a less than problem or a greater than problem. the problem is a less than problem or a greater than problem....
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This note was uploaded on 02/22/2012 for the course MATH 1310 taught by Professor Marks during the Summer '08 term at University of Houston.

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1310-Notes-Sec-28 - Math 1310 Class Notes Section 2.8, Page...

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