In addition to Bunuel's reply
It helps to ask the question ( keeping in mind m is negative)
Will all negative numbers lie in the range 100<m<0 --No
Will all negative numbers <=-1 -- No
Will all negative numbers <= 1 -- Yes
Will all negative numbers lie between -100 and 100 -- No
For all negative numbers will m^2 >= 1/4 -- No
It helps to ask the question ( keeping in mind m is negative)
Will all negative numbers lie in the range 100<m<0 --No
Will all negative numbers <=-1 -- No
Will all negative numbers <= 1 -- Yes
Will all negative numbers lie between -100 and 100 -- No
For all negative numbers will m^2 >= 1/4 -- No
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