Cody

# Problem 2383. Kepler's Equation

Solution 1937978

Submitted on 16 Sep 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
M = pi/2; e = 0; assert(isequal(round(kepler(M, e)*1e5)/1e5, 1.5708))

Error using fzero (line 306) FZERO cannot continue because user-supplied function_handle ==> @(E)x-e*sin(E)-M failed with the error below. Undefined function or variable 'x'. Error in kepler (line 2) E = fzero(@(E) x-e*sin(E)-M,0) Error in Test1 (line 3) assert(isequal(round(kepler(M, e)*1e5)/1e5, 1.5708))

2   Fail
M = pi/2; e = 0.8; assert(isequal(round(kepler(M, e)*1e5)/1e5, 2.21193))

Error using fzero (line 306) FZERO cannot continue because user-supplied function_handle ==> @(E)x-e*sin(E)-M failed with the error below. Undefined function or variable 'x'. Error in kepler (line 2) E = fzero(@(E) x-e*sin(E)-M,0) Error in Test2 (line 3) assert(isequal(round(kepler(M, e)*1e5)/1e5, 2.21193))

3   Fail
M = pi/3; e = 0.1; assert(isequal(round(kepler(M, e)*1e5)/1e5, 1.13798))

Error using fzero (line 306) FZERO cannot continue because user-supplied function_handle ==> @(E)x-e*sin(E)-M failed with the error below. Undefined function or variable 'x'. Error in kepler (line 2) E = fzero(@(E) x-e*sin(E)-M,0) Error in Test3 (line 3) assert(isequal(round(kepler(M, e)*1e5)/1e5, 1.13798))

4   Fail
M = 0.1; e = 0.2; assert(isequal(round(kepler(M, e)*1e5)/1e5, 0.12492))

Error using fzero (line 306) FZERO cannot continue because user-supplied function_handle ==> @(E)x-e*sin(E)-M failed with the error below. Undefined function or variable 'x'. Error in kepler (line 2) E = fzero(@(E) x-e*sin(E)-M,0) Error in Test4 (line 3) assert(isequal(round(kepler(M, e)*1e5)/1e5, 0.12492))