Hello all,(adsbygoogle = window.adsbygoogle || []).push({});

I'm working on a problem related to my MS thesis (in Civil Engineering, not mathematics). I have come across an integral on which I have spent entirely too long.

If I could get some pointers, I'd greatly appreciate it.

[tex]\int [E(x) \cdot (u''(x))^2 \cdot dx] [/tex]

It is a definite integral over the length, L, of a beam, but that doesn't really matter too much.

E(x) = Eo*(1+x/L) with Eo and L being constants

u(x) = a2*x^2+a3*x^3+a4*x^4 with a1, a2, a3, and a4 being constants

u''(x) is the second derivative of u(x) with respect to x.

Any help would be greatly appreciated.

Thanks,

JRautenb

**Physics Forums - The Fusion of Science and Community**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# *Impossible* Integral?

Loading...

Similar Threads - *Impossible* Integral | Date |
---|---|

Impossible Integration involving cosx/sqrt(a-bcosx) | Jan 22, 2016 |

Impossible double integral? | Nov 22, 2013 |

Impossible integral | Feb 2, 2011 |

When is it impossible to integrate? | Feb 16, 2010 |

Tricky (impossible?) Integral | Jan 23, 2008 |

**Physics Forums - The Fusion of Science and Community**