Răspunsuri

2014-08-21T16:22:15+03:00
Conditie : Δ ≥ 0

Δ =  b^{2} -4ac

a=1
b=-4m
c=1

Δ = ( -4m)^{2} -4*1*1

( -4m)^{2}  = 16 *  m^{2}

16 *  m^{2}  -4 ≥ 0

16 *  m^{2}  ≥  4

m^{2}  ≥  \frac{4}{16}

m^{2}  ≥  \frac{1}{4}

+ sau minus m ≥  \frac{1}{2}


Rezulta m ∈ (-infinit ,-  \frac{1}{2} ) U (  \frac{1}{2} , infinit)

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