Solve the quadratic equation ax^2+bx+c=0. However, some of the normal functions and symbols are not allowed.
x=[ -b +/- sqrt ( b^2 - 4ac ) ] / ( 2a )
Unallowed functions and symbols:
roots mtimes cross prod cumprod times mldivide mrdivide dot numstr int2str dec2bin * / \ - ^ '
Derivative of Aurelien's Cody 813 Multiply 2 numbers
Also related to Cody 833 Side of a Triangle
Test suite "disallowed function usage check" courtesy of Aurelien Queffurust.
Example :
Input
a= 1; b= 1; c=1
Output
x(1)= -0.5+0.866i; x(2)= -0.5-0.866i
Just as a heads up, your final answer should be in a row vector, and not a column vector.
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