y=log10(x^3+2x^2+x) 求导

log10(x^3) + log10(y^2) = 11 log10(x^2) + log10(y^3) = 3 求解方程组. y=log10(x^3+2x^2+x) 求导 如果 log10 x = 3 + log10 y, 求 的解. log10 x=-2 求x值 log10 (3x+2)=3 求x log10(x-15)+log10x=2 已知x>0,y>0且3x+4y=12,则log10(x)+log10(y)的最大值? 求函数y = log10(x − 2) and y = 1 − log10(x + 1).的交点,为什么x-2和x+1是正数? 为什么：2log10∧x+1会等于log10∧(x∧2)+log10∧10 matlab解对数方程组[x,y,z]=solve('0.29744*x/(3+0.1*x+y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)))^2','0.79*x/(3+0.1*y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.1*y+z)))^2','1.25*x/(3+0.1*z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.*1y+z)*(3+z)/ 函数y=根号下log10(x^2-x-1)的定义域是? 已知x>0,y>0且3x+4y=12,则log10(x)+log10(y)的最大值以及x=?,y=? lgx 乘以 log10 x=? 两道数学题目,答对附加50分2 x+2 6-x x 2 * 5 = 10 求X,这是第一题 第二题：X+log10 X= Y-1 Y+log10 (Y-1)= z-1 Z+log10 (Z-2)= x+2 求所有的可能的实数 另外证明没有更多的答案了.2^(x+2 求函数Y=log10(a的X次方-K乘以2的X次方的定义域 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* 怎样用MATLAB画出z关于x的曲线,z=35220*x^2*y,y=[2*log10(63*x*y^0.5)-0.8]^(-2), matlab画y=lgx 为什么不对呢?x=logspace(0,10); y=log(x); loglog(x,y) grid on比如log10^2并不等于2