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Grade: 11

                        

The value of √(log 2 0.5 4) is 1) -2 2) -4 (in root) 3) 2 4) None of these

11 years ago

Answers : (2)

askiitian.expert- chandra sekhar
10 Points
							

Hi Vishrant,

The value of √ should always be positive √(x2) =|x|

Therefore the answer is 2

11 years ago
Badiuddin askIITians.ismu Expert
147 Points
							

hi Vishant

you should remember that √(a2)=|a|

so √(log20.5 4)=|log0.5 4|

                         =|log2-1 22|

                           =|-2 log22|

                          =2 log22

                           =2        { sinse we know logaa=1}

so option 3 is correct

11 years ago
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