The input value can be represented by the values of a curve?
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Calculation:z=c.^4+b.^4-c.^2-exp(c+b)-2.*c.*b-b.^2
Here,b=1;
A curve represent the values of c
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/151877/image.jpeg)
The values of c versus time
Thus,the values of z can also be represented by a curve?
program: x=[0 25 50 70 80 100]; y=[0 5 7 9 10 11]; a=polyfit(x,y,3); syms X fy=vpa(poly2sym(a,X),4)
x1=min(x):max(x);
h1=polyval(a,x1);
c=fy;b=1;
z=c.^4+b.^4-c.^2-exp(c+b)-2.*c.*b-b.^2
Where is the curve of c?
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Andrei Bobrov
2015-7-7
x = [0 25 50 70 80 100];
y = [0 5 7 9 10 11];
a = polyfit(x,y,3);
c = polyval(a,min(x):max(x));
b = 1;
z = c.^4+b.^4-c.^2-exp(c+b)-2.*c.*b-b.^2;
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