matlab 画图出错 Conversion to double from sym is not possible.syms x;y=-2.1813e-005*(x^5)+0.0013202*(x^4)-0.02357*(x^3)+0.086555*(x^2)+0.028076*x+22.711;dy=diff(y);x=0:.1;30;plot(x,dy)

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matlab 画图出错 Conversion to double from sym is not possible.syms x;y=-2.1813e-005*(x^5)+0.0013202*(x^4)-0.02357*(x^3)+0.086555*(x^2)+0.028076*x+22.711;dy=diff(y);x=0:.1;30;plot(x,dy)
matlab 画图出错 Conversion to double from sym is not possible.
syms x;
y=-2.1813e-005*(x^5)+0.0013202*(x^4)-0.02357*(x^3)+0.086555*(x^2)+0.028076*x+22.711;
dy=diff(y);
x=0:.1;30;
plot(x,dy)

matlab 画图出错 Conversion to double from sym is not possible.syms x;y=-2.1813e-005*(x^5)+0.0013202*(x^4)-0.02357*(x^3)+0.086555*(x^2)+0.028076*x+22.711;dy=diff(y);x=0:.1;30;plot(x,dy)
syms x;
y=-2.1813e-005*(x^5)+0.0013202*(x^4)-0.02357*(x^3)+0.086555*(x^2)+0.028076*x+22.711;
dy=diff(y);
ezplot(dy,[0 30])

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