Homework Help: math-calculus

Posted by Shreya on Tuesday, January 17, 2012 at 7:01pm.

which of following statements is false

1. The absolute value of a real number is the principal square root of the square of the number.

2. The absolute value of a real number is the distance of the number from zero on a number line.

3. The absolute value of a real number can never be negative.

I thought it be statement 2, and 3 but it also number 1, and i not real understand what that statement means.

math-calculus - Reiny, Tuesday, January 17, 2012 at 7:03pm
#1 is false , all we need is one counterexample

Assume the statement is true.

| 64 | = 64
√64 = 8

64≠ 8
math-calculus - Shreya, Tuesday, January 17, 2012 at 7:06pm
i get it! thanks reiny :D

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