Why is it wrong: e3=sym('si​n(x)^2+cos​(x)=0')

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zhenyu zeng
zhenyu zeng 2019-4-22
评论： madhan ravi 2019-4-22
Why is it wrong: e3=sym('sin(x)^2+cos(x)=0')

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madhan ravi
madhan ravi 2019-4-22
编辑：madhan ravi 2019-4-22
sym('') was replaced by str2sym('') in latest versions and you seem to be using 2018b version
e3=str2sym('sin(x)^2+cos(x)=0')
% ^^^^^^^
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zhenyu zeng
zhenyu zeng 2019-4-22
Why not use str2sym('a') instead of sym('a’)?
madhan ravi
madhan ravi 2019-4-22
It only works for only a number or a variable. Read the documentations. Take MATLAB on-ramp course to learn the basics of MATLAB.

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KSSV
KSSV 2019-4-22
syms x
e3 = sin(x)^2+cos(x)==0

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