作业帮matlab 中fprintfclear all; syms xy = (1500-x)*(1+0.0015*x);ezplot(y,[1000,2000]);dydx = diff(y,x);xsh= solve(dydx);ymax=subs(y,x,xsh);ezplot(y,[0 1500]) ;hold on;plot(xsh,ymax,'-ro'); grid on;hold off;fprintf('the best count is %d dollars/n',xsh)运
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![matlab 中fprintfclear all; syms xy = (1500-x)*(1+0.0015*x);ezplot(y,[1000,2000]);dydx = diff(y,x);xsh= solve(dydx);ymax=subs(y,x,xsh);ezplot(y,[0 1500]) ;hold on;plot(xsh,ymax,'-ro'); grid on;hold off;fprintf('the best count is %d dollars/n',xsh)运](/uploads/image/z/1248803-35-3.jpg?t=matlab+%E4%B8%ADfprintfclear+all%3B+syms+xy+%3D+%281500-x%29%2A%281%2B0.0015%2Ax%29%3Bezplot%28y%2C%5B1000%2C2000%5D%29%3Bdydx+%3D+diff%28y%2Cx%29%3Bxsh%3D+solve%28dydx%29%3Bymax%3Dsubs%28y%2Cx%2Cxsh%29%3Bezplot%28y%2C%5B0+1500%5D%29+%3Bhold+on%3Bplot%28xsh%2Cymax%2C%27-ro%27%29%3B+grid+on%3Bhold+off%3Bfprintf%28%27the+best+count+is+%25d+dollars%2Fn%27%2Cxsh%29%E8%BF%90)
matlab 中fprintfclear all; syms xy = (1500-x)*(1+0.0015*x);ezplot(y,[1000,2000]);dydx = diff(y,x);xsh= solve(dydx);ymax=subs(y,x,xsh);ezplot(y,[0 1500]) ;hold on;plot(xsh,ymax,'-ro'); grid on;hold off;fprintf('the best count is %d dollars/n',xsh)运
matlab 中fprintf
clear all;
syms x
y = (1500-x)*(1+0.0015*x);
ezplot(y,[1000,2000]);
dydx = diff(y,x);
xsh= solve(dydx);
ymax=subs(y,x,xsh);
ezplot(y,[0 1500]) ;
hold on;
plot(xsh,ymax,'-ro');
grid on;
hold off;
fprintf('the best count is %d dollars/n',xsh)
运行后
Error using ==> fprintf
Function is not defined for 'sym' inputs.
Error in ==> one1 at 13
fprintf('the best count is %d dollars/n',xsh)
matlab 中fprintfclear all; syms xy = (1500-x)*(1+0.0015*x);ezplot(y,[1000,2000]);dydx = diff(y,x);xsh= solve(dydx);ymax=subs(y,x,xsh);ezplot(y,[0 1500]) ;hold on;plot(xsh,ymax,'-ro'); grid on;hold off;fprintf('the best count is %d dollars/n',xsh)运
clear all;
syms x
y = (1500-x)*(1+0.0015*x);
ezplot(y,[1000,2000]);
dydx = diff(y,x);
xsh= solve(dydx);
ymax=subs(y,x,xsh);
ezplot(y,[0 1500]) ;
hold on;
plot(double(xsh),double(ymax),'-ro');
grid on;
hold off;
fprintf('the best count is %s dollars/n',char(xsh))