检查底座10的对数函数的几个值。GydF4y2Ba

计算1的公共对数。GydF4y2Ba

日志10（1）GydF4y2Ba

ANS = 0GydF4y2Ba

其结果是GydF4y2Ba0GydF4y2Ba，所以这是的x截距GydF4y2BaLOG10GydF4y2Ba功能。GydF4y2Ba

计算10的常用对数。GydF4y2Ba

log10 (10)GydF4y2Ba

ANS = 1GydF4y2Ba

其结果是GydF4y2Ba1GydF4y2Ba以来GydF4y2Ba $$\mathrm{1GydF4y2Ba}{\mathrm{0GydF4y2Ba}}^{\mathrm{1GydF4y2Ba}}=GydF4y2Ba\mathrm{1GydF4y2Ba}\mathrm{0GydF4y2Ba}$$。GydF4y2Ba

计算100常用对数。GydF4y2Ba

日志10（100）GydF4y2Ba

ANS = 2GydF4y2Ba

其结果是GydF4y2Ba2GydF4y2Ba以来GydF4y2Ba $$\mathrm{1GydF4y2Ba}{\mathrm{0GydF4y2Ba}}^{\mathrm{2GydF4y2Ba}}=GydF4y2Ba\mathrm{1GydF4y2Ba}\mathrm{0GydF4y2Ba}\mathrm{0GydF4y2Ba}$$。GydF4y2Ba

计算0的公共对数。GydF4y2Ba

日志10（0）GydF4y2Ba

ans =负GydF4y2Ba

其结果是GydF4y2Ba-InfGydF4y2Ba以来GydF4y2Ba $$\mathrm{1GydF4y2Ba}{\mathrm{0GydF4y2Ba}}^{-GydF4y2Ba\infty GydF4y2Ba}=GydF4y2Ba\mathrm{0GydF4y2Ba}$$。GydF4y2Ba

在区间创建数的向量GydF4y2Ba[0.5 5]GydF4y2Ba。GydF4y2Ba

X =（0.5：0.5：5）';GydF4y2Ba

计算的常用对数GydF4y2BaXGydF4y2Ba。GydF4y2Ba

Y = LOG10（X）GydF4y2Ba

Y =GydF4y2Ba10×1GydF4y2Ba-0.3010 0 0.1761 0.3010 0.3979 0.4771 0.5441 0.6021 0.6532 0.6990GydF4y2Ba

创建两个直角坐标网格GydF4y2BaXGydF4y2Ba和GydF4y2BaÿGydF4y2Ba。GydF4y2Ba

(X, Y) = meshgrid (0:0.5:1.5 2:0.5:2);GydF4y2Ba

计算复基10的对数GydF4y2Ba $$\mathrm{升GydF4y2Ba}\mathrm{ØGydF4y2Ba}{\mathrm{GGydF4y2Ba}}_{\mathrm{1GydF4y2Ba}\mathrm{0GydF4y2Ba}}（GydF4y2Ba\mathrm{XGydF4y2Ba}+GydF4y2Ba\mathrm{一世GydF4y2Ba}\mathrm{ÿGydF4y2Ba}）GydF4y2Ba$$在网格上。使用GydF4y2Ba1IGydF4y2Ba改进的速度和鲁棒性与复数运算。GydF4y2Ba

Z =日志10（X + 1 I * Y）GydF4y2Ba

Z =GydF4y2Ba9×4复杂GydF4y2Ba0.3010  -  0.6822i 0.3142  -  0.5758i 0.3495  -  0.4808i 0.3979  -  0.4027i 0.1761  -  0.6822i 0.1990  -  0.5425i 0.2559  -  0.4268i 0.3266  -  0.3411i 0.0000  -  0.6822i 0.0485  -  0.4808i 0.1505  -  0.3411i 0.2559  -  0.2554i -0.3010-  0.6822i -0.1505  -  0.3411i 0.0485  -  0.2014i 0.1990  -  0.1397i -Inf + 0.0000i -0.3010 + 0.0000i 0.0000 + 0.0000i 0.1761 + 0.0000i -0.3010 + 0.6822i -0.1505 + 0.3411i 0.0485 + 0.2014i 0.1990 +0.1397i 0.0000 + 0.6822i 0.0485 + 0.4808i 0.1505 + 0.3411i 0.2559 + 0.2554i 0.1761 + 0.6822i 0.1990 + 0.5425i 0.2559 + 0.4268i 0.3266 + 0.3411i 0.3010 + 0.6822i 0.3142 + 0.5758i 0.3495 + 0.4808i 0.3979 + 0.4027iGydF4y2Ba