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regarding the output graph, pls help me to correct my input..

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Gowrinath S
Gowrinath S 2019-7-28
关闭： MATLAB Answer Bot 2021-8-20
syms x y
f=input('x.^2');
x0=input('2');
y0=subs(f,x,x0);
fx=diff(f,x);
m=subs(fx,x,x0);
tangent=y0+m*(x-x0);
plotrange=[x0-3+x0-3];
ezplot(f,plotrange);
hold on;
ezplot(tangent,plotrange);
title('ploting of tangents')
t=sprintf('the tan to the curve y= %s at the point (%d,%d)is y= %s,f,x0,y0,tangent');
disp(t)
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Walter Roberson
Walter Roberson 2019-7-28
plotrange=[x0-3+x0-3];
That is going to return a scalar, but ezplot() requires that it be passed a vector of two values. Perhaps you want
plotrange = [x0-3, x0+3];

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