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can i create a real variable i.e variable which does not have any value but i will specify the datatype of variable and i want to use it for ploting

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gavr
gavr 2014-2-6
回答： Walter Roberson 2014-2-6
can i create a real variable i.e variable which does not have any value but i will specify the datatype of variable and i want to use it for ploting

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回答（2 个）

Anuj
Anuj 2014-2-6
编辑：Anuj 2014-2-6
X = sym('X')
Walter Roberson
Walter Roberson 2014-2-6
syms x
f = sin(x);
xvals = 0 : .01 : 2*pi;
plot(xvals, double(subs(f, x, xvals)));

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