Question

1) integrate (e^x)/x
2) integrate e^(-x^2)

Answer 1

1.e'lnx

Answer 2

thats not right but I have no clue how to do it

Answer 3

ok

Answer 4

1) e^x

Answer 5

how did u get e^x?

Answer 6

well just try to differentiate e^x u will get e^x /x.. so vice versa

Answer 7

(e^x)/x has no elementary integral-- you can try integration by parts but you won't get anywhere.

so mathematicians have made up a special function called the exponential integral, Ei(x), which is defined as:

Ei(x) = integral, from -infinity to x, of (e^t / t) dt

Answer 8

I will ask my tutor about this next week. Interesting topic

Answer 9

we r done with integral calculus.. oh i forgot

Answer 10

can I do that integral using complex analysis?