Exercises
[117]Show that if the series of \((f_ n)_ n,(g_ n)_ n\) converge totally, then the series of \((f_ n+g_ n)_ n\) converges totally.
[117]Show that if the series of \((f_ n)_ n,(g_ n)_ n\) converge totally, then the series of \((f_ n+g_ n)_ n\) converges totally.