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When you take the integral using the series as integrand, it converges if the integral worked out to be a number. If it's infinte, the series diverge.
Yes. If the Maclaurin expansion of a function locally converges to the function, then you know the function is smooth. In addition, if the residual of the Maclaurin expansion converges to 0, the function is analytic.
harmonic series 1/n .
Given a function sequence f1(x), f2(x), f3(x)..., the limit can be defined in several ways: - Point by point limit; that is, it converges to a new function at each point. - Lp convergence; that is, it converges to a new function in Lp-norm. - Almost everywhere convergent; that is, it converges to a new function except a set with measure zero.
it converges light into a specific point of our eye so that we can see the object clearer.