• anonymous
Big-O notation, how to find constants a and b? Any guide or video online? I am not sure if I should post this in math or computer science. I am having trouble with big-o, omega, theta etc. But I want to work on them 1 by 1. I am having trouble finding guides or videos on how to find constants a and b. I kind of have an idea with a, but have a huge trouble for b :( A lot of videos I have watched focused on the concept, but none that I saw explained how to find a and b. By finding I mean I need to know the number for a and b. It is for calculating algorithm running time. Does anyone have a good guide on how to learn big-o? Thanks! Example problem: Using the big-o definition (must specify two positive constants), prove that 4n^2 - 2n + 5 = O(n^2) The a I found is 7. Which came from: 4n^2 - 2n + 5 <= 4n^2 -2n^2 + 5n^2 = 7n^2 But I don't know how to find constant b.
Mathematics
• Stacey Warren - Expert brainly.com
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