Articles

• F

  • Finding an interval for rational numbers with a high denominator

• H

  • How to bound a sum of infinitely many positive real numbers
  • How to prove conditional convergence

• I

  • I have a problem about an infinite sum
  • If you want to calculate an infinite sum exactly, relate it to coefficients associated with some function

• T

  • To calculate an infinite sum exactly, try antidifferencing
  • To construct a function with several local constraints, start with simple cases and build from there
  • To evaluate an integral, differentiate under the integral sign
  • To optimize a sum try making the terms roughly equal in size
  • To prove that a sequence converges, find one or more convergent subsequences