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# 01_ME3255_repo | |
# Answer to Homework Question | |
I hope to learn how to perform MATLAB functions more easily. | |
#Problem 2 | |
```MATLAB | |
A_66=zeros(6:6); | |
for i=1:6; | |
j=1:6; | |
A_66(i,j)=i*j; | |
end | |
Average = mean(A_66(:)) | |
Standard_Deviation = std(A_66(:)) | |
``` | |
#Problem 4 | |
```MATLAB | |
data=dlmread('US_energy_by_sector.csv',',',2,0); | |
figure(1) | |
plot(data(:,1),data(:,3),data(:,1),data(:,9)); | |
set(0, 'defaultAxesFontSize', 16) | |
set(0,'defaultTextFontSize',14) | |
set(0,'defaultLineLineWidth',3) | |
set(gcf, 'Position', [200, 200, 1000, 800]) | |
xlabel('Time (years)') | |
ylabel('Total Energy Consumed (trillions of BTUs)') | |
legend('Residential','Transportation','Location','northwest') | |
title('US Energy Consumption from 1949 to 2016') | |
rescum=cumsum(data(:,3))./1000000;%cumulative sum of residential energy | |
%consumption in quintillions | |
transcum=cumsum(data(:,9))./1000000;%cumulative sum of transportational | |
%energy consumption in quintillions | |
figure(2) | |
plot(data(:,1),rescum,data(:,1),transcum) | |
set(gcf, 'Position', [500, 200, 1000, 800]) | |
xlabel('Time (years)') | |
ylabel('Total Energy Consumed (quintillions of BTUs)') | |
legend('Residential','Transportation','Location','northwest') | |
title('Cumulative US Energy Consumption from 1949 to 2016') | |
``` | |
#Problem 5 (Velocity and Acceleration) |