how can I use fzero to this equation?

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mar vouz
mar vouz 2016-1-7
评论： Star Strider 2016-1-7
P(x)=polyfit(x,y,7)

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Star Strider
Star Strider 2016-1-7
This is how I would do it:
x = -9:9; % Create Data
y = x.^3 - 2; % Create Data
p = polyfit(x,y,7); % Fit Polynomial
f = @(x,p) cos(sqrt(abs(polyval(p,x)))) - sin(x)/2; % Function
f_root = fzero(@(x) f(x,p), 1) % Find Root
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Star Strider
Star Strider 2016-1-7
My pleasure!
The most sincere expression of thanks here on MATLAB Answers is to Accept the Answer that most closely solves your problem.

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