Réponses

2014-03-21T11:32:35+01:00
Bonjour,

C= 5x 10^-3 x 12 x 10^6 / 15 x 10^2 x 8 x 10^-5

C= \dfrac{5\times 10^{-3}\times12\times10^6}{ 15\times10^2\times8\times10^{-5}}\\\\C= \dfrac{5\times 12}{ 15\times8}\times\dfrac{10^{-3}\times10^6}{ 10^2\times10^{-5}}\\\\C= \dfrac{60}{120}\times\dfrac{10^{-3+6}}{ 10^{2-5}}\\\\C= \dfrac{1}{2}\times\dfrac{10^{3}}{ 10^{-3}}\\\\C= \dfrac{1}{2}\times10^{3-(-3)}\\\\C= 0,5\times10^{3+3}

C= 0,5\times10^{6}\\\\C= 5\times10^{-1}\times10^{6}\\\\C= 5\times10^{-1+6}\\\\C= 5\times10^{5}\\\\(C=500000)
2014-03-21T12:57:02+01:00

C= 5x 10^-3 x 12 x 10^6 / 15 x 10^2 x 8 x 10^-5
C = ( 5 * 12 * 10^-3 * 10^6) /(15 * 8 * 10^2 * 10^-5)

C = 3 * 10^( - 3+6) / 3 * 2 * 10^(2 - 5)

C = 10^3 /2 * 10^-3

C = 10^3 * 10^3 * 1/2

C = 1/2 * 10^6

C = 0.5 * 10^6

C = 5 ^10^(6-1)

C = 5 * 10^5 = 500 000