比如说log10 X=13那么X怎么计算!

比如说log10 X=13那么X怎么计算! lgx 乘以 log10 x=? 如果 log10 x = 3 + log10 y, 求 的解. log10(x^3) + log10(y^2) = 11 log10(x^2) + log10(y^3) = 3 求解方程组. a1*log10(x)+a0 = log10(y) matlab 求参数函数 a1*log10(x)+a0 = log10(y)现在已知 x y 的多个取值 怎么算出a0 a1 用matlab做怎么做啊！ log10 x=-2 求x值 log10(x-15)+log10x=2 Log10 x = log10的x次幂等于多少?如题 y=log10(x^3+2x^2+x) 求导 log10 (6x)=1 x等于多少? log10 (3x+2)=3 求x log10^x-1/log10^x+1＞0 matlab 怎么编循环函数求助大神帮我把下面程序改成‘0.005’这个值为【0.005；0.001；0.015】的循环函数clc;f=@(x)([3*log10(x(1))-2*log10(0.005)-0.3060*0.005+0.088*x(1)-2020.8*x(2)+19.21;2*log10(0.005)+3*log10(x(2))-11.61* 已知x>0,y>0且3x+4y=12,则log10(x)+log10(y)的最大值? 为什么：2log10∧x+1会等于log10∧(x∧2)+log10∧10 Matlab中,log10(y)=-0.5*log10(x)+1.8 ,请问如何画出plot(x,y)的曲线谢谢一楼答案！不过能否保留log10(x)，log10（y）在函数表达式里面呢？谢谢 10 log10 (S/N)=30,为什么得S/N=100010 log10 (S/N) 是不是 10 X log10 (S/N) (1)．已知x=1,y=2,z=26,计算下面表达式的值 log10(y^x*sqrt(z-x)%11)