Question

MATLAB HELP :

Create a MATLAB function starting as follows:-

Function [root1,root1] = quadraticroots (a,b,c) to find the roots of a quadratic function. To test your function find the roots of the following equation:-

X^2+5x+6=0

Submit the complete listing and results of a run with the variable a=1,b=5 and c=6.

Your file should contain at least the following:-

Purpose of the function,

Description of the input and output variables,

Call statement(s),

PLEASE SHOW FULL SCRIPT OF THE MATLAB with results .

Answer 1

The MTALAB Function file (quadraticroots.m) below

function [root1,root2] = quadraticroots (a,b,c)
% thif function computes the roots of the the
% quadratic equation from given value of a,b,c

%input parameters are a,b,c

%output : root1,root2 : represents two roots
d=b*b-4*a*c; % find discriminant
if(d>=0)
root1=(-b+sqrt(d))/(2*a); %compute root1
root2=(-b-sqrt(d))/(2*a); %compute root2
end
end

The MATLAB Script File below

% this script is given for test purpose to call the quadraticroots() function
% to slove aquadratic equation.
clc;
a=1;
b=5;
c=6;
%call quadraticroots (a,b,c) function
[root1,root2]=quadraticroots (a,b,c);
%print the roots
fprintf('\nRoot1= %f',root1);
fprintf('\nRoot2= %f',root2);
fprintf('\n');

//The sample run with a=1. b=5, c=6;