Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Differential Equation

  1. Apr 27, 2010 #1
    Let c be a positive number, and let A > 0 represent the initial value of a population.
    a) Show that the function p(t) = (A^(-c) - ct)^(-1/c) satisfies the differential equation
    p'(t) = (p(t))^(1+c)
    b) What happens to p(t) as t > (A^(-c)/c) from the left?

    2. Find the Maclaurin series for the functions sinh(x) and cosh(x) by using the Maclaurin
    series for ex and the defnitions of sinh(x) and cosh(x) in terms of ex. Compute the radius
    of convergence for each series.
  2. jcsd
  3. Apr 27, 2010 #2


    User Avatar
    Science Advisor

    Have you not even tried to do this yourself? And this looks suspiciously like homework.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook