R= 2/3 log_{10}((10^{14})/(10^{4.4)})

解答

R = \frac{2}{3} lo g_{10} (\frac{1 0 ^{14}}{1 0 ^{4.4}})

R = \frac{19.2}{3}

十进制

R = 6.4

求解步骤

R = \frac{2}{3} lo g_{10} (\frac{1 0 ^{14}}{1 0 ^{4.4}})

化简

\frac{2}{3} lo g_{10} (\frac{1 0 ^{14}}{1 0 ^{4.4}}) : \frac{19.2}{3}

R = \frac{19.2}{3}

\frac{2}{3} m - 2 + \frac{1}{6} m + \frac{3}{2} = \frac{1}{2} m

so l v e f or y, x = y + 4

so l v e f or y, 2 x - 5 y = 10

2 (- z - 1) = - 4 z

- \frac{2}{5} z - 10 = - 4