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Question

The range of the function f(x)=2|x1|+|x+2|, 1x2 is

A
[0,3]
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B
[3,6]
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C
[0,6]
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D
[0,2]
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Solution

The correct option is B [3,6]
f(x)=2|x1|+|x+2|

f(x)={2(x1)+x+2,1x<12(x1)+x+2,1x2

={4x,1x<13x,1x2


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