Recent content by ooellis

  1. O

    Undergrad Product of the first n primes and add 1

    Good call Lurflurf. Thanks
  2. O

    Undergrad Product of the first n primes and add 1

    Yes but what about the primes that are larger than the primes that went into it but still smaller than number in question. I know 2311 is prime, but there are still many primes larger than 7 but less than 2311. Maybe eventually there is somewhere that it breaks down, then again maybe it won't...
  3. O

    Undergrad Product of the first n primes and add 1

    I was discussing something with my friends today. If you take the product of the first n primes and add 1 will this give you a prime number? For instance: 2*3 +1 = 7 ------> prime 2*3*5 +1 = 31 -------> prime 2*3*5*7 + 1 = 2311 ------> prime Can anybody find if/where this breaks...
  4. O

    Finding the Coordinates of a Point Using Rectangular and Polar Formulas

    2 equations, 2 unknowns Use: x=rcos(theta) eqn. 1 y=rsin(theta) eqn. 2 Since you know what x and theta are you can solve for r in eqn. 1. Then once you know r you can plug that into eqn. 2 and solve for y.