Can not plot, please help

2011 10 18
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x = 0:1:10
y = (15*x)/(4*x.^2-3*x+4)
plot(x,y)
why can't i plot this? please help me.

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Sean de Wolski
Sean de Wolski 2011-10-18

0 个投票

It is plotting, it's just only plotting a single point. The matrix division of a 1x11 vector by a 1x11 vector is a scalar.
ones(1,10)/ones(1,10)
You probably meant for element-by-element division
ones(1,10)./ones(1,10)
And thus your defintion of y:
y = (15*x)./(4*x.^2-3*x+4)
look at
doc vectorize
to avoid these issues in the future.

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