Konstantreglen lim x x 0 k=k x-alene-reglen lim x x 0 x= x 0 plusreglen lim x x 0 ( f(x)+g(x) )= lim x x 0 f(x)+ lim x x 0 g(x) minusreglen lim x x 0 ( f(x)g(x) )= lim x x 0 f(x) lim x x 0 g(x) gangereglen lim x x 0 ( f(x)g(x) )= lim x x 0 f(x) lim x x 0 g(x) brøkreglen lim x x 0 f(x) g(x) = lim x x 0 f(x) lim x x 0 g(x)