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Error using * Inner matrix dimensions must agree

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ding xian zhi
ding xian zhi 2017-3-19
编辑： per isakson 2017-3-19
y=cos(x).*[0.5+(3*sin(x))./(1+x*x)]
Error using *
Inner matrix dimensions must agree.
I want to know where is the problem could anyone help me thx

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GEEVARGHESE TITUS
GEEVARGHESE TITUS 2017-3-19
In the last part of the relation you are trying to do x*x, which is not possible. You should either use a dot operator or you need to transpose one of the x.
x=1:10;
y1=cos(x).*[0.5+(3*sin(x))./(1+x.*x)]
y2=cos(x).*[0.5+(3*sin(x))./(1+x*x')]

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