- #1

newton1

- 152

- 0

does the integrate e^(x^2) can solve??

i think is no...

but why??

i think is no...

but why??

Last edited by a moderator:

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- Thread starter newton1
- Start date

- #1

newton1

- 152

- 0

does the integrate e^(x^2) can solve??

i think is no...

but why??

i think is no...

but why??

Last edited by a moderator:

- #2

HallsofIvy

Science Advisor

Homework Helper

- 43,021

- 970

Since e^(x^2) is a continuous function, yes, it HAS an integral (anti-derivative). Every continuous function (and many non-continuous functions) is the derivative of some function and therefore has an anti-derivative.

Is that anti-derivative any "elementary function" (defined as polynomials, rational functions, exponentials, logarithms, trig functions and combinations of them)? No, if fact for most functions the anti-derivative is not an elementary function. (There are more functions in heaven and Earth than are dreamed of in your philosophy, Horatio!)

Of course one can always DEFINE a new function to do the job. I don't know specifically about e^(x^2) but the ERROR FUNCTION, Erf(x) is defined as an anti-derivative of e^(-x^2).

- #3

newton1

- 152

- 0

may i ask what is Error Function??

- #4

ottjes

- 24

- 0

first result:

http://www.mathworks.com/access/helpdesk/help/techdoc/ref/erf.shtml

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