知道y的值,怎么标注出对应x值所对应曲线的坐标啊;matlab答:clear;clc;x=linspace(0,15,16);y=25*x;y1=0.2*0.0045*x.^5-0.25*0.1517*x.^4+1.7807/3*x.^3-0.5*8.3483*x.^2+29.2147*x;L=(y-y1)*6.5/3;plot(x,L);hold on;x160=interp1(L,x,160);plot(x160,160,'r.');text(x160,160,sprintf(' (%g, %g)',x160,160)...