How do I multiply a given function handle with the independent variable?

조회 수: 3 (최근 30일)
I have pre-defined n number of function handles f_{i} which are functions of t for i = 1 to n. How do I define a new function g_{i} = t.f_{i} and then evaluate the integral of each g_{i} from t=0 to 1?

채택된 답변

Steven Lord
Steven Lord 2023년 4월 3일
f = @sin;
g = @(t) t.*f(t);
format longg
[3*sin(3); g(3)] % Spot check by evaluating the function at t = 3
ans = 2×1
0.423360024179602 0.423360024179602
Now you can use g like any other function handle in functions like integral.
numericAnswer = integral(g, 0, 2*pi)
numericAnswer =
syms x
symbolicAnswer = int(x.*sin(x), 0, 2*pi) % or
symbolicAnswer = 
symbolicAnswer = int(g(x), 0, 2*pi)
symbolicAnswer = 
[numericAnswer; double(symbolicAnswer)]
ans = 2×1
-6.28318530717959 -6.28318530717959

추가 답변 (1개)

埃博拉酱 2023년 4월 3일
Use symfun and int in Symbolic Math Toolbox if you want to do integrals.


Help CenterFile Exchange에서 Calculus에 대해 자세히 알아보기

Community Treasure Hunt

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

Start Hunting!

Translated by