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

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 Y=zeros(FFTSIZE,1); Y=20*log10(abs(X1)); subplot(3,1,2); 在matlab中, 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！ matlab中如何求解log10(x)-426.5x=a(a为未知量) 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. 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)/ matlab中log10[(10.^(2/10)-1)/(10.^2-1)]/log10(5/12)怎么出错 Matlab中出现? Error using ==> mtimes Inner matrix dimensions must agree. 是什么意思啊,程序如下pd=0.95;pfa=10e-8;N=10:10:100;m=6.79*(1+0.253*pd)*(1+(log10(1/pfa))/46.6)*(1-0.14*log10(N)+0.0183*log10(N)*log10(N))plot(N,m) 怎么样才 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 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画函数图function r=funr(t)Hs=[0.490.991.491.992.492.993.493.994.494.995.495.99];P=[0.11578842 0.38326167 0.60983902 0.76612339 0.86081392 0.92500750 0.96370363 0.99130087 0.99660034 0.99870013 0.99970003 0.99990001 ];x=log10(Hs-t);y=log10(- matlab编的程序出的图不对,不知道怎么回事.r=0.0181gmax=22x=-50:50;y=38+1.6*(gmax-24)+46*log10(r)+5*log10(n)+33*log10(20./(x));plot(x,y)n=6 已知x>0,y>0且3x+4y=12,则log10(x)+log10(y)的最大值? y=log10(x^3+2x^2+x) 求导 matlab中solve语句y=input('please input relativeroughness:');z=input('please input Re:');[x]=solve('1/sqrt(x)=1.74-2*log10(2*y+18.7/(z*sqrt(x)))','x');x=subs(x); fprintf('沿程损失系数是%15.14f ',x)当y=0.01,z=8e7结果x=0但是把数直接 log10^6+log10^0.006=多少? matlab中pp=spline(x1,y1);y2=ppval(pp,x=[0.1 0.05 0.02 0.01 0.005 0.001];y=[100 94.68 72.10 41.82 27.13 11.69];x1=log10(x);y1=y;xx=-3.0:0.04:-1;pp=spline(x1,y1);y2=ppval(pp,xx)