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equation fitting and plotting

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aditi
aditi 2014-1-23
关闭： MATLAB Answer Bot 2021-8-20
I have 5 x axis values and 5 y axis values..
now i want to fit the equation
f(x)=a*(x^b - 2^b)
after that i have to plot the 5 data points which i did like plot(x,y)
now i have to plot my fitted function also on the same plot and it should be a smooth curve.
please help me..

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回答（1 个）

David Sanchez
David Sanchez 2014-1-23
Did you consider the use of curve fitting tool?
cftool
On the command window, type:
doc cftool
You'll be given some examples similar to your problem.
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David Sanchez
David Sanchez 2014-1-23
the fitting function are part of the curve fitting tool. If you don't have it, you have to code the fitting algorithm yourself.
aditi
aditi 2014-1-23
when i am using cftool it is fitting fine but giving totally wrong values of the parameters

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