Cody

Problem 1068. Guess the Coefficients!

Solution 173083

Submitted on 5 Dec 2012 by James
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Test Suite

Test Status Code Input and Output
1   Pass
%% assert(isequal(guess_the_coefficients(@(x)x^2+2*x+15),[1 2 15]))

a = 1 2 3 4 5 6 7 8 9 10 b = 18 23 30 39 50 63 78 95 114 135 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 0 0 1 2 15 ans = 1 2 15

2   Pass
%% assert(isequal(guess_the_coefficients(@(x)polyval(53,x)),53))

a = 1 2 3 4 5 6 7 8 9 10 b = 53 53 53 53 53 53 53 53 53 53 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 0 0 0 0 53 ans = 53

3   Pass
%% assert(isequal(guess_the_coefficients(@(x)polyval([54 87],x)),[54 87]))

a = 1 2 3 4 5 6 7 8 9 10 b = 141 195 249 303 357 411 465 519 573 627 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 0 0 0 54 87 ans = 54 87

4   Pass
%% assert(isequal(guess_the_coefficients(@(x)polyval([49 40 68],x)),[49 40 68]))

a = 1 2 3 4 5 6 7 8 9 10 b = Columns 1 through 8 157 344 629 1012 1493 2072 2749 3524 Columns 9 through 10 4397 5368 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 0 0 49 40 68 ans = 49 40 68

5   Pass
%% assert(isequal(guess_the_coefficients(@(x)polyval([75 53 35 15],x)),[75 53 35 15]))

a = 1 2 3 4 5 6 7 8 9 10 b = Columns 1 through 8 178 897 2622 5803 10890 18333 28582 42087 Columns 9 through 10 59298 80665 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 0 75 53 35 15 ans = 75 53 35 15

6   Pass
%% assert(isequal(guess_the_coefficients(@(x)polyval([59 27 5 76 25],x)),[59 27 5 76 25]))

a = 1 2 3 4 5 6 7 8 9 10 b = Columns 1 through 8 192 1357 5806 17241 40780 82957 151722 256441 Columns 9 through 10 407896 618285 [Warning: Polynomial is badly conditioned. Add points with distinct X values, reduce the degree of the polynomial, or try centering and scaling as described in HELP POLYFIT.] [> In polyfit at 76 In guess_the_coefficients at 4 In verifyCode>evaluateCode at 226 In verifyCode at 40 In fevalJSON at 14] c = 0 0 0 0 0 59 27 5 76 25 ans = 59 27 5 76 25

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