freeware http://groups.yahoo.com/group/mathc/

* Calculus : Integral Length and sufaces of revolution.

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Windows : Dev-C++ 4
Linux : gcc abc.c -lm Return
a.out Return

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* You can compile the *.c files directly without create a project.

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* The arc length of the graph of f from A(a,f(a)) to B(b,f(b))

c05d1A.c : f : x-> x + 1
c05d1B.c : f : x-> x**2
c05d1C.c : f : x-> sin(x)
c05d1D.c : f : x-> log(x)
c05d1E.c : f : x-> exp(x)


* The area S of the surface generated by revolving
the graph of f about the x-axis is (ONLY A GIFT GRAPH).


c05d2A.c : g : x-> sqrt(x)
c05d2B.c : g : x-> x**(2)
c05d2C.c : g : x-> sin(x)
c05d2D.c : g : x-> exp

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The members can try these links :

http://groups.yahoo.com/group/mathc/files/C/D/c05d.zip