Integrate y=x*sin(a*​x^4).*exp(​x^2./2)

조회 수: 2 (최근 30일)
Mudeebe Edison
Mudeebe Edison 2019년 10월 13일
How can I integrate this function it gives me the same integrate as the answer integrating from [1 to 5] y=x*sin(a*x^4).*exp(x^2./2)
  댓글 수: 1
darova
darova 2019년 10월 13일
What have your tried? Any ideas?

댓글을 달려면 로그인하십시오.

채택된 답변

Thiago Henrique Gomes Lobato
Thiago Henrique Gomes Lobato 2019년 10월 13일
편집: Thiago Henrique Gomes Lobato 2019년 10월 13일
Matlab can't find the close integral form for all functions (some may even not have one). If you are interested only in the value of the definite integral, you can evaluate it both with the symbolic toolbox with a given precision or numerically by specifiying a value for a:
a = 2; % Specify a Value
% Symbolic
syms y x
y=x*sin(a*x^4).*exp(x^2./2);
ySymbolic = vpa(int(y,x,[1 5]),8)
% Numeric
f = @(t)t.*sin(a*t.^4).*exp(t.^2./2);
yNumeric = integral(f,1,5)
Difference = ySymbolic-yNumeric
yNumeric =
-1.2607e+03
ySymbolic =
-1260.7316
Difference =
0.00000000009231371222995221614837646484375

추가 답변 (0개)

카테고리

Help CenterFile Exchange에서 Symbolic Math Toolbox에 대해 자세히 알아보기

태그

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by