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m in (-oo:+oo)
m = (3.5*0.5^2)/8 // - (3.5*0.5^2)/8
m-((3.5*0.5^2)/8) = 0
m-0.4375*0.5^2 = 0
m-0.4375*0.5^2 = 0 // + -0.4375*0.5^2
m = -(-0.4375*0.5^2)
m = 0.4375*0.5^2
m = 0.4375*0.5^2
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