Q5:
If vmt ≠ 0, is v2m3t-4 > 0?
(1) m > v2
(2) m > t-4
i think this problem is dependent on the m,if m>0,then the function is >0,if m<0,then the function is <0.but in this case ,we all can get m>0,so the answer is d,is it right?
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