# Math Help - Please help with this integration Q

1. ## 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

2. ## Re: Please help with this integration Q

Note that $\int_0^a 2^{[x]}\,dx=2^0+2^1+\dots+2^{a-1}$.