Am i doing right for these two question

okevino · Apr 24, 2007

see attachment
thanks.

quasar987 · Apr 24, 2007

That a_n-->0 in [tex]\sum a_n[/tex] does not imply that the series is convergent. You should re-read that theorem in your notes/book more carefully to see what it's actually saying.

HallsofIvy · Apr 24, 2007

lim a_n= 0 is a necessary condition that
[tex]\Sigma a_n[/tex]
converge, not a sufficient condition!

The first one "compares" to the sum of 1/n which does NOT converge.

Am i doing right for these two question

Attachments

Discussion

Undergrad Why ##a^0=1##?

Undergrad Finding the minimum distance between two curves

High School Arc Length for Hyperbolic Sin

Undergrad Best way to numerically solve this system of equations?

Undergrad Why is ##x=e^y## the inverse of ##y=\int_1^x \frac{1}{t} dt##?

Undergrad Correct Upper/Lower limits for continuation of solutions for ODE

Graduate About ellipticity and a proof that a system of PDEs is elliptic

Graduate Leibniz Rule Videos on Digital-University

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

Am i doing right for these two question

Attachments

Discussion

Similar threads

Am I doing this related rates right?

What am I doing wrong while solving problems?

Volume w/ Double Integrals: What Am I Doing Wrong?

1D Particle & Energy w/ F(x): Am I doing this right?

Need help on these two questions

What Am I Doing Wrong in Calculating Potential on a Grid?

Undergrad Noether's second theorem: two questions

What Am I Doing Wrong? : Improper Intergals

High School Two questions about Black body radiation

Graduate Two Questions about Novikov Coordinates