Trouble with symbolic integrals

5 次查看（过去 30 天）
Pedro Jesús Arrabalin Vega
回答： Star Strider 2021-10-22
syms x;
f = exp((x^2-1)/2)/(1-x^2)^0.5;
int(f,-1,1)
%% Matlab does not solve that integral
% The output is:
% ans =
% int(exp(x^2/2 - 1/2)/(1 - x^2)^(1/2), x, -1, 1)

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回答（1 个）

Star Strider
Star Strider 2021-10-22
Ran in:
Since the desired result is numeric, use vpaintegral —
syms x;
f = exp((x^2-1)/2)/(1-x^2)^0.5;
int_f = vpaintegral(f,-1,1)
int_f = 
2.48505
.

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