User:Bamboo3250

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Revision as of 20:08, 29 September 2009 by Bamboo3250 (talk | contribs)
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Etou... Formula of roots of a quadratic equation with general form is: ax²+bx+c=0 (a≠0)

         x1=(-b+√Δ)/2a
         x2=(-b-√Δ)/2a

With: Δ=b²-4ac


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Ohm's law: I=U/R

With:

         U is the potential difference measured across the resistance in units of volts (V);
         I is the current through the resistance in units of amperes (A);
         R is the resistance of the conductor in units of ohms (Ω);

Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference or voltage across the two points, and inversely proportional to the resistance between them. (Định luật phát biểu như sau: Cường độ dòng điện chạy qua dây dẫn tỉ lệ thuận với hiệu điện thế đặt vào hai đầu dây dẫn và tỉ lệ nghịch với điện trở của dây.)

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The chemical equation of the life:

         2H2 + O2 -> 2H2O


====> This is my life... Ahaha~