MATLAB: An Introduction with Applications 5e by Amos Gilat

非常好的书，在美国AMAZON上很威风的。

谢谢分享

1. Sample Problem 8-1:  Calculating polynomials with MATLAB
   
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3. For the polynomial f(x) = x5 − 12.1x4 + 40.59x3 − 17.015x2 − 71.95x + 35.88 :
   
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5. (a)  Calculate f(9).
   
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7. (b)  Plot the polynomial for −1.5 ≤ x ≤ 6.7.
   
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9. Solution
   
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11. The problem is solved in the Command Window.
    
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13. (a)  The coefficients of the polynomials are assigned to vector p. The function polyval is then used to calculate the value at x = 9.
    
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15. >> p = [1 -12.1 40.59 -17.015 -71.95 35.88];
    
16. >> polyval(p,9)
    
17. ans =
    
18.   7.2611e+00

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虽然看不懂，还是感谢分享

thanks for sharing