Finding the definite integral of a constant?
조회 수: 3 (최근 30일)
이전 댓글 표시
Hello. I'm writing a program for class which solves Gauss's Law numerically and plots points. The problem I'm running into is in the integral. Gauss's Law for a sphere can be rearranged into two definite integrals: the integral of sin(theta) from 0 to pi and the integral of 1 from 0 to 2pi. I used trapz for both:
theta = 0:pi/100:pi;
polarintegral = sin(theta);
phi = 0:pi/100:2*pi;
azimuthintegral = 1;
polar = trapz(theta, polarintegral);
azimuth = trapz(phi, azimuthintegral);
The theta integral works perfectly. Matlab, however, doesn't seem to understand how to integrate 1, since it's not a function of phi. The project instructions says that we're not allowed to solve the integral for the program, even if it's simple. Does anybody have any ideas how I might be able to fix this snag?
By the way, I'm using Matlab 2009b in case that makes a difference. Thank you!
댓글 수: 0
채택된 답변
Shashank Prasanna
2013년 1월 16일
편집: Shashank Prasanna
2013년 1월 16일
Maybe you want to do this instead:
az = ones(length(phi),1);
azimuth = trapz(phi, az)
추가 답변 (0개)
참고 항목
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!