Răspunsuri

2014-06-18T18:53:21+03:00
4.Fie punctul de coordonate egale A(a,a)
A(a,a) ∈Gf daca f(a)=a
                 f(a)=-a-1=a/-a
                          -2a-1=0
                            -2a=1
                              a=-2/1 = > A(-2/1,-2/1)
5.E(x) = (x+1)² + (x-1)² - (x-2)(x+2)
   E(x)= x²+2x+1 +x²-2x+1 - ( x²-2²)
    E(x)= 2x² +2 - x² +4
    E(x) = x² + 6
Inlocuiesti x cu 1 si √2
E(1)= 1² + 6 = 1+6 = 7
E(√2) = (√2)² + 6 = 2 + 6 = 8
E(1) + E(√2) = 7 +8= 15
1 5 1
2014-06-18T18:56:38+03:00
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