@Kitonum Many thanks for your reply. With your approach I get the answer in terms of FresnelS or FresnelC function. Is there any way I can get the answer in trignometric terms etc?

Thanks

@tomleslie Dear Sir

I apologize for the wrong syntax. Infact I have written the function phi(x) using exp as well as using * sign for multiplication, then I copied the expression generated by Maple and there these were missing. Your corrections do produce the same function which I want. 

Please tell me how to tackle this integration.

Thanks

@Axel Vogt Hi, thank you for your reply. What I intend to do is that integrate the expression V as given by you in your answer from 0 to 1 again with respect to r (in your case). Following your code I added the following two lines,

'Int(V, r = 0 .. 1)';
evalf(%);
 
2.314485477 + 2.195047415 10^-10 I

@Carl Love I am integrating from 0 to 1 with respect to X only.

@Carl Love Actually I intend to do a double integration i.e. integrate the result of previous integral from 0 to 1. So at the end I expect differential in terms of t with some numeric coefficients.

Thanks for your method, with this I am able to integrate it but is there some way I end up with numbers after I integrate it again from 0 to 1.