Question

MATLAB Homework 3- Due:5/20/2018 1. Create a function that receives the following input data, and prints the output as the summation of the diagonal elements (The elements which are located at the intersection of similarly numbered rows and columns) Input (Matrix A) Output (Scalar B) Example 2 -1 4 3 -45 ? B = A( 1,1) + A(2,2) = 2-4 =-2 A4 5 ?41 ? B = A(1,1) + A(2,2)--1-4-5 -3 1 1.5 -4 3.2 -1 06 1.78 2.22 -4.56 2. Create a function that receives the following input data (which are essentially the coefficients of a second de with increments of 0.1: gree polynomial, and plots the function in the interval 0 to 5 A, B, C Input (scalars) Output (plot) Plot Example A 2,B 3,C--1Plot 2x23x 1 forx [0:0.1:5 A =-4, B = 1,C = 1 ? Plot?4x2 + x + 1 for x = [0: 0.1 : 5]

Answer 1

1. The sample outputs are as follows :

Ex 1:

Ex 2:

Copy and run the following source code in MATLAB.

Source code:

function B=sum_diagonal(A)
B=0;
for i=1:min(size(A))
B=B+A(i,i);
end
end

2. The sample plots are as follows:

Ex 1:

Ex 2:

Source code:

function plot_polynomial(A,B,C)
x=[0:0.1:5];
y=A*(x.^2)+B*(x)+C;
  
plot(x,y);
end