Cody

# Problem 966. Bisection method of finding a root.

Solution 1756411

Submitted on 21 Mar 2019
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### Test Suite

Test Status Code Input and Output
1   Fail
f=@(x) x.^2-4; x_lower = 1; x_upper = 3; es = 0; maxit=1; x_root_correct = 2; assert(isequal(bisection(f,x_lower,x_upper,es,maxit),x_root_correct))

count = 1

Undefined function or variable 'root'. Error in bisection (line 15) er = (x_upper - root)/x_upper Error in Test1 (line 7) assert(isequal(bisection(f,x_lower,x_upper,es,maxit),x_root_correct))

2   Fail
f=@(x) x.^2-4; x_lower = 1; x_upper = 4; es = 0; maxit=1; x_root = 2.5; assert(isequal(bisection(f,x_lower,x_upper,es,maxit),x_root))

count = 1

Undefined function or variable 'root'. Error in bisection (line 15) er = (x_upper - root)/x_upper Error in Test2 (line 7) assert(isequal(bisection(f,x_lower,x_upper,es,maxit),x_root))

3   Fail
f=@(x) x.^2-4; x_lower = 1; x_upper = 4; x_root = 2.000000476837158; assert(isequal(bisection(f,x_lower,x_upper),x_root))

count = 1

Not enough input arguments. Error in bisection (line 13) while count <= maxiter Error in Test3 (line 5) assert(isequal(bisection(f,x_lower,x_upper),x_root))