TRS: { terms(N) -> cons(recip(sqr(N)), n__terms(s(N))), sqr(0()) -> 0(), sqr(s(X)) -> s(add(sqr(X), dbl(X))), dbl(0()) -> 0(), dbl(s(X)) -> s(s(dbl(X))), add(0(), X) -> X, add(s(X), Y) -> s(add(X, Y)), first(0(), X) -> nil(), first(s(X), cons(Y, Z)) -> cons(Y, n__first(X, activate(Z))), terms(X) -> n__terms(X), first(X1, X2) -> n__first(X1, X2), activate(n__terms(X)) -> terms(X), activate(n__first(X1, X2)) -> first(X1, X2), activate(X) -> X} Fail