Easy question on range
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Easy question on range

[From: ] [author: ] [Date: 11-12-10] [Hit: ]
Im used to that symbol being much less than, but that doesnt make sense here.Assuming less or equal, I agree with your answer.......
Given the function f(x)=|2x-5|, find the range of values of f for the domain 0«x«3.

*My answer is 0«f(x)«5, but the given answer is 0
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What's the « operator...less or equal? I'm used to that symbol being "much less than", but that doesn't make sense here.

Assuming less or equal, I agree with your answer. Using <= instead as in Basic and C:

0 <= x <= 3
0 <= 2x <= 6
-5 <= 2x - 5 <= 1
0 <= |2x - 5| <= 5
0 <= f(x) <= 5

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The maths symbol for ' less than ' is <
you cannot use <<
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