
problems integrating a function
Posted:
Jan 4, 2011 8:29 PM


Please, Could any of you find the numerical solution to the integral of sin[(xpi)/sqrt(x)] from pi/100 to pi?
S = int(sin((xpi)/sqrt(x)),x=pi/100..pi)
You may copy and paste there. I have already tried both Matlab and Scilab.
From Matlab I get: Warning: Explicit integral could not be found. > In sym.int at 64 In char.int at 9 ans = int(sin(1/x^(1/2)*(pi  x)), x = pi/100..pi)
From scilab (I installed scilab just to integrate this function): >integrate('sin((x%pi)/sqrt(x))','x',0,%pi) !error 24 Convergence problem... at line 70 of function integrate called by : integrate('sin((x%pi)/sqrt(x))','x',0,%pi)
The solution is 1.295820
I just can't get Matlab to find it.
Many thanks

