Finding Big-O of sqrt(x^3+x^2+3) - Is Reverse the Same?

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Homework Statement



how do i find the least n such that

sqrt(x^3+x^2+3) is O(x^n)?

is the reverse the same?
 
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hi shahin93! :smile:

try it for x = 10, then x = 100, then x = 100000 …

you'll soon get the hang of what n needs to be :wink:​
 
Thread 'Have I solved this structural engineering equation correctly?'

Thread 'Have I solved this structural engineering equation correctly?'

Hi all, I have a structural engineering book from 1979. I am trying to follow it as best as I can. I have come to a formula that calculates the rotations in radians at the rigid joint that requires an iterative procedure. This equation comes in the form of: $$ x_i = \frac {Q_ih_i + Q_{i+1}h_{i+1}}{4K} + \frac {C}{K}x_{i-1} + \frac {C}{K}x_{i+1} $$ Where: ## Q ## is the horizontal storey shear ## h ## is the storey height ## K = (6G_i + C_i + C_{i+1}) ## ## G = \frac {I_g}{h} ## ## C...
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