# Please help with this integration Q

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• Feb 20th 2013, 09:40 AM
James7361539
Please help with this integration Q
Hey I'm stuck on Q2 part 2

I have attached a photo of the Q
NB its Q2 on the photo

Also I have attached the graph of y=2^[x]

Thanks for any replies about how to do it
• Feb 20th 2013, 09:49 AM
emakarov
Re: Please help with this integration Q
Note that $\int_0^a 2^{[x]}\,dx=2^0+2^1+\dots+2^{a-1}$.