I want to integrate this function

x=0:50;
y=exp(-x./25).*sqrt((25+x)/(25-x));
int(y,x,0,50)

i want to integrate this function

Answer 1

[Star Strider]

Use the integral function —

x = 0:50;
y = @(x) exp(-x./25).*sqrt((25+x)/(25-x));
int_y = integral(y,0,50)

int_y = 0.0000 + 21.6166i

The cumtrapz (or trapz) function is another option:

x = 0:50;
y = @(x) exp(-x./25).*sqrt((25+x)/(25-x));
int_y = cumtrapz(x,y(x));

figure
plot(x, real(int_y),  x,imag(int_y))
grid
legend('Real','Imaginary', 'Location', 'best')

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