"sam" <[EMAIL PROTECTED]> writes: > Hello all, I am taking a class in scientific programming at the local > college. My problem is that the following difference produces round off > errors as the value of x increases. For x >= 19 the diference goes to > zero.I understand the problem, but am curious as to whether their > exists a solution. [f(x) = cosh^2(x) - sinh^2(x) = 1]
The usual way is to notice that the difference goes to zero because the lowest order terms of the Taylor series for cosh^2 and sinh^2 are equal and cancel each other out. The solution is to write down the series for (cosh^2(x) - sinh^2(x)) and add up a few non-cancelled terms. All these series should converge very fast. -- http://mail.python.org/mailman/listinfo/python-list
